MF3 Endocrinology Objectives

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General Objectives

Homeostasis is the steady-state internal metabolic equilibrium the body requires to function optimally. Hormones are the chemical messengers through which body systems are controlled and integrated. Endocrinology encompasses all the hormonal regulatory mechanisms that are used to achieve and maintain homeostasis. Several different endocrine glands will be studied in turn with respect to their control mechanisms, secretory hormonal products and the effects of the hormones produced. It is important to realize, however, that the function of any one gland is affected by the others. By the end of this subunit, you will gain an understanding of the role of hormones and hormone systems in maintaining homeostasis as well as the pathology that can result from hormonal dysfunction or disease.

Tutorial: All MF3 Endocrinology tutorial problems
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

By the end of the endocrinology subunit you should be able to:

Describe hormones, their structure, and their role in homeostasis.

Active Large Group Session: Overview of Endocrinology
Tutorial: All MF3 Endocrinology tutorial problems
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Explain the relationship between hormones and their receptors.

Active Large Group Session: Overview of Endocrinology
Tutorial: All MF3 Endocrinology tutorial problems
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Describe the physiology, pathophysiology, clinical presentation, investigation and treatment of conditions related to the following endocrine glands or conditions: Diabetes mellitus; Pituitary; Thyroid; Adrenal; Parathyroid.

Active Large Group Session: Overview of Endocrinology
Tutorial: All MF3 Endocrinology tutorial problems
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.
2.3 Apply principles of clinical sciences to diagnostic and therapeutic decision-making, clinical problem-solving, and other aspects of evidence-based healthcare
2.4 Apply principles of epidemiological sciences to the identification of health problems, risk factors, treatment strategies, resource allocation, and disease prevention/health promotion efforts for patients and populations

Explain the analysis of laboratory data in the context of various endocrine disease.

Tutorial: All MF3 Endocrinology tutorial problems
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice

Describe the interplay between nutrition and endocrine disease.

Tutorial: Lauren Bick MF3 Endocrinology
Lauren Bick is a 13-year-old girl who presents to her family physician's office with a 6-month history of weight loss. Her mother is concerned because she has noticed that Lauren has lost at least 10 pounds since her last doctor's visit which she had just before she started at her new school. Although Lauren has always been a "petite" girl, she is now the shortest in her class. The doctor asks Lauren's mom to give her a few minutes alone with Lauren. Once Lauren's mom has left the room, the doctor reviews the limits of confidentiality with Lauren and asks her about her weight loss. Lauren explains that she has met a new group of friends who do not believe that it is healthy to eat animals so she has joined them in following a vegan diet. She also reports that she's recently joined the long distance running club at her school. Lauren indicates that despite her mother's wishes, Lauren's goal is to get her weight down to 25 kg in the next few months. Lauren requests that you don't tell her mother this as it will likely cause them to argue. Lauren's menarche was at age 11 and she had been having regular menstrual periods but in the last 4 months, she has not had a period. Lauren indicates that she has not been sexually active. On questioning, she reports some constipation and says that she often feels cold.
Tutorial: Michel Dupois MF3 Endocrinology
Mr. Dupois is a 35-year-old French-Canadian man born in rural Quebec who moved to Hamilton with his wife a few years ago. His family physician noted a persistent rash around his eyes that he identified as xanthelasma. This prompted some blood tests and a referral to the Lipid Clinic. He is rather reluctant to see you at the Lipid Clinic because he is completely asymptomatic. He denies any significant medical history and is taking no medications. He is a lifelong non-smoker who faithfully walks to work for 1 km with no problems. A family history indicates that Mr. Dupois’ father died suddenly at the age of 46 with no clear explanation. He has multiple family members on his father’s side had a history of heart attacks, some at an unusually young age. His mother is healthy. On physical exam he has soft, velvety, yellowish, non-tender plaques in the palpebral area. Thickening of the Achilles tendons bilaterally were also noted. His blood pressure was 145/90 and waist circumference 98 cm.
Tutorial: Stephen Golding MF3 Endocrinology
Stephen Golding, a 22 year old man presents to the emergency department with nausea, vomiting, abdominal pain and a 3-day history of polyuria, polydipsia, and weight loss. He states that he has "junvenille insulin-dependent" diabetes but stopped taking his insulin 5-days ago.
Tutorial: Susanna Green Part 1 MF3 Endocrinology
Susanna Green is a 59-year-old member of the Six Nations of the Grand River. She has a strong family history of type 2 diabetes mellitus. Until two years ago, Susanna had been closely followed since she was diagnosed with diabetes mellitus 28 years ago. Unfortunately, Susanna has not been seen for two years while she was living in the United States. She has self-reported "good" control of her sugars, though she admits that she uses her glucometer only infrequently. Several years ago, she had laser therapy for diabetic retinopathy, but her vision is now stable. She has mild orthostatic hypotension and numbness of her toes. She also has a history of coronary artery bypass grafting following a myocardial infarction six years ago. She has no symptoms to suggest cardiac ischemia, and her exercise tolerance is not restricted. Her medications include metformin, sitagliptin and gliclazide for blood sugar control. Her hypertension, diagnosed about 5 years ago, is currently treated with amlodipine and ramipril. She is taking rosuvastatin to control her cholesterol. Examination reveals a well-looking woman with blood pressure of 155/93 mmHg, BMI of 32.5, increased waist to hip circumference ratio, normal chest and cardiac examination, trace edema to her ankles, normal cardiorespiratory examination. No acute changes are present on fundoscopy, though there the telltale findings of a history of laser photocoagulation are present.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Themes

Diabetes Mellitus

Describe the structure and function of the endocrine pancreas, the role of glucose as a fuel, and the physiology of plasma glucose regulation, insulin synthesis and release.

Tutorial: Stephen Golding MF3 Endocrinology
Stephen Golding, a 22 year old man presents to the emergency department with nausea, vomiting, abdominal pain and a 3-day history of polyuria, polydipsia, and weight loss. He states that he has "junvenille insulin-dependent" diabetes but stopped taking his insulin 5-days ago.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Describe the role of insulin in energy metabolism.

Tutorial: Stephen Golding MF3 Endocrinology
Stephen Golding, a 22 year old man presents to the emergency department with nausea, vomiting, abdominal pain and a 3-day history of polyuria, polydipsia, and weight loss. He states that he has "junvenille insulin-dependent" diabetes but stopped taking his insulin 5-days ago.
Tutorial: Susanna Green Part 1 MF3 Endocrinology
Susanna Green is a 59-year-old member of the Six Nations of the Grand River. She has a strong family history of type 2 diabetes mellitus. Until two years ago, Susanna had been closely followed since she was diagnosed with diabetes mellitus 28 years ago. Unfortunately, Susanna has not been seen for two years while she was living in the United States. She has self-reported "good" control of her sugars, though she admits that she uses her glucometer only infrequently. Several years ago, she had laser therapy for diabetic retinopathy, but her vision is now stable. She has mild orthostatic hypotension and numbness of her toes. She also has a history of coronary artery bypass grafting following a myocardial infarction six years ago. She has no symptoms to suggest cardiac ischemia, and her exercise tolerance is not restricted. Her medications include metformin, sitagliptin and gliclazide for blood sugar control. Her hypertension, diagnosed about 5 years ago, is currently treated with amlodipine and ramipril. She is taking rosuvastatin to control her cholesterol. Examination reveals a well-looking woman with blood pressure of 155/93 mmHg, BMI of 32.5, increased waist to hip circumference ratio, normal chest and cardiac examination, trace edema to her ankles, normal cardiorespiratory examination. No acute changes are present on fundoscopy, though there the telltale findings of a history of laser photocoagulation are present.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Explain the classification, epidemiology, diagnosis and pathophysiology of diabetes mellitus.

Tutorial: Stephen Golding MF3 Endocrinology
Stephen Golding, a 22 year old man presents to the emergency department with nausea, vomiting, abdominal pain and a 3-day history of polyuria, polydipsia, and weight loss. He states that he has "junvenille insulin-dependent" diabetes but stopped taking his insulin 5-days ago.
Tutorial: Susanna Green Part 1 MF3 Endocrinology
Susanna Green is a 59-year-old member of the Six Nations of the Grand River. She has a strong family history of type 2 diabetes mellitus. Until two years ago, Susanna had been closely followed since she was diagnosed with diabetes mellitus 28 years ago. Unfortunately, Susanna has not been seen for two years while she was living in the United States. She has self-reported "good" control of her sugars, though she admits that she uses her glucometer only infrequently. Several years ago, she had laser therapy for diabetic retinopathy, but her vision is now stable. She has mild orthostatic hypotension and numbness of her toes. She also has a history of coronary artery bypass grafting following a myocardial infarction six years ago. She has no symptoms to suggest cardiac ischemia, and her exercise tolerance is not restricted. Her medications include metformin, sitagliptin and gliclazide for blood sugar control. Her hypertension, diagnosed about 5 years ago, is currently treated with amlodipine and ramipril. She is taking rosuvastatin to control her cholesterol. Examination reveals a well-looking woman with blood pressure of 155/93 mmHg, BMI of 32.5, increased waist to hip circumference ratio, normal chest and cardiac examination, trace edema to her ankles, normal cardiorespiratory examination. No acute changes are present on fundoscopy, though there the telltale findings of a history of laser photocoagulation are present.
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.
2.4 Apply principles of epidemiological sciences to the identification of health problems, risk factors, treatment strategies, resource allocation, and disease prevention/health promotion efforts for patients and populations

Explain the pathogenesis of diabetic ketoacidosis (DKA) and its management.

Tutorial: Stephen Golding MF3 Endocrinology
Stephen Golding, a 22 year old man presents to the emergency department with nausea, vomiting, abdominal pain and a 3-day history of polyuria, polydipsia, and weight loss. He states that he has "junvenille insulin-dependent" diabetes but stopped taking his insulin 5-days ago.
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Describe the microvascular and macrovascular complications of diabetes mellitus.

Tutorial: Susanna Green Part 1 MF3 Endocrinology
Susanna Green is a 59-year-old member of the Six Nations of the Grand River. She has a strong family history of type 2 diabetes mellitus. Until two years ago, Susanna had been closely followed since she was diagnosed with diabetes mellitus 28 years ago. Unfortunately, Susanna has not been seen for two years while she was living in the United States. She has self-reported "good" control of her sugars, though she admits that she uses her glucometer only infrequently. Several years ago, she had laser therapy for diabetic retinopathy, but her vision is now stable. She has mild orthostatic hypotension and numbness of her toes. She also has a history of coronary artery bypass grafting following a myocardial infarction six years ago. She has no symptoms to suggest cardiac ischemia, and her exercise tolerance is not restricted. Her medications include metformin, sitagliptin and gliclazide for blood sugar control. Her hypertension, diagnosed about 5 years ago, is currently treated with amlodipine and ramipril. She is taking rosuvastatin to control her cholesterol. Examination reveals a well-looking woman with blood pressure of 155/93 mmHg, BMI of 32.5, increased waist to hip circumference ratio, normal chest and cardiac examination, trace edema to her ankles, normal cardiorespiratory examination. No acute changes are present on fundoscopy, though there the telltale findings of a history of laser photocoagulation are present.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

List and describe treatment options for diabetes mellitus.

Tutorial: Stephen Golding MF3 Endocrinology
Stephen Golding, a 22 year old man presents to the emergency department with nausea, vomiting, abdominal pain and a 3-day history of polyuria, polydipsia, and weight loss. He states that he has "junvenille insulin-dependent" diabetes but stopped taking his insulin 5-days ago.
Tutorial: Susanna Green Part 1 MF3 Endocrinology
Susanna Green is a 59-year-old member of the Six Nations of the Grand River. She has a strong family history of type 2 diabetes mellitus. Until two years ago, Susanna had been closely followed since she was diagnosed with diabetes mellitus 28 years ago. Unfortunately, Susanna has not been seen for two years while she was living in the United States. She has self-reported "good" control of her sugars, though she admits that she uses her glucometer only infrequently. Several years ago, she had laser therapy for diabetic retinopathy, but her vision is now stable. She has mild orthostatic hypotension and numbness of her toes. She also has a history of coronary artery bypass grafting following a myocardial infarction six years ago. She has no symptoms to suggest cardiac ischemia, and her exercise tolerance is not restricted. Her medications include metformin, sitagliptin and gliclazide for blood sugar control. Her hypertension, diagnosed about 5 years ago, is currently treated with amlodipine and ramipril. She is taking rosuvastatin to control her cholesterol. Examination reveals a well-looking woman with blood pressure of 155/93 mmHg, BMI of 32.5, increased waist to hip circumference ratio, normal chest and cardiac examination, trace edema to her ankles, normal cardiorespiratory examination. No acute changes are present on fundoscopy, though there the telltale findings of a history of laser photocoagulation are present.
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Pituitary and Hypothalamus

Recognize the pituitary as the central control gland of the body.

Tutorial: Adam Pajek MF3 Endocrinology
A 40-year old man, Adam Pajek, was seen in a walk-in clinic complaining of palpitations, heat intolerance (felt hot when others were comfortable or cold), sweating, anxiety, weight loss, fatigue, and sleeplessness for two months. He reports that his sister has a hypothyroid problem for which she takes Eltroxin pills.
Tutorial: Calvin Shin MF3 Endocrinology
Dr. Jones has been following Calvin Shin for several years for obstructive sleep apnea. He had been doing well with reduced symptoms of daytime sleepiness since he had been using his CPAP machine. Dr. Jones was reviewing John's chart in his clinic. He missed his appointment several months ago but booked an urgent appointment through his family doctor. Calvin explains that he thinks his tongue, nose and lips have been getting thicker. He also states that he seems to be sweating and his skin feels thicker and oilier than it used to.
Tutorial: Chantal Landry MF3 Reproduction
Chantal is a 5 year 2 month old child who presents with advanced development of the breasts for the past 7 months, and possible growth of pubic hair. This is associated with rapid growth. She has had intermittent "spotting" during the last two days. Apart from occasional emotional outburts (crying, "fighting" with her 9 year old sister and with her mother) she has no other problems. Chantal's Mom is 36 years old and a school teacher with height at the 50th centile. She had menses at age 13 years. Dad, 44 yrs old, is a lawyer with a height at the 50th centile. He began shaving at ~ 15-16 years of age. He has mild hypertension. The family history is negative for early puberty. The parents are non-consanguineous.
Tutorial: Emily Bradstone MF3 Endocrinology
A 55 year old female, Emily Bradstone, is seen by a hematologist for easy bruising. No hematological problem was found. An internist also saw the patient. There has been a one-year history of easy bruising, weight gain, worsening of diabetes, difficulty climbing stairs and edema of the ankles
Tutorial: Pit Parapan MF3 Endocrinology
A 32-year-old female was seen in emergency department for abdominal pain, nausea and diarrhea. Her serum calcium was found to be elevated at 2.94 mmol/L (normal 2.15-2.55 mmol/L). She was treated with intravenous fluids. Her calcium improved to 2.65 mmol/L and she was discharged home to care for her 6-year-old son. She was referred urgently to an outpatient clinic to investigate her elevated calcium. She was also prescribed pantoprazole for worsening heartburn. In the clinic, Ms. Parapan reported a 2-year history of abdominal pain that was getting worse over time. The pantoprazole she was prescribed was modestly helpful in easing her heartburn and abdominal pain. She denied symptoms of polyuria, polydipsia, confusion or mood changes. There is no history of kidney stones. She had a fracture of her humerus at age 15 due to a ski accident. She was taking pantoprazole and a multivitamin daily. Ms. Parapan’s family history is significant for a father who had a pancreatic tumour, though she does not know any more details about his condition. Both her sister and her paternal aunt had a parathyroidectomy. The same aunt had a pituitary tumour requiring surgery.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Examine the anatomic and functional relationship between the pituitary and hypothalamus.

Tutorial: Emily Bradstone MF3 Endocrinology
A 55 year old female, Emily Bradstone, is seen by a hematologist for easy bruising. No hematological problem was found. An internist also saw the patient. There has been a one-year history of easy bruising, weight gain, worsening of diabetes, difficulty climbing stairs and edema of the ankles
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

List the hormones produced by the pituitary and explain their effects on body function.

Tutorial: Calvin Shin MF3 Endocrinology
Dr. Jones has been following Calvin Shin for several years for obstructive sleep apnea. He had been doing well with reduced symptoms of daytime sleepiness since he had been using his CPAP machine. Dr. Jones was reviewing John's chart in his clinic. He missed his appointment several months ago but booked an urgent appointment through his family doctor. Calvin explains that he thinks his tongue, nose and lips have been getting thicker. He also states that he seems to be sweating and his skin feels thicker and oilier than it used to.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Describe the most common pathologies associated with pituitary hormone systems including acromegaly and hyperprolactinemia.

Tutorial: Calvin Shin MF3 Endocrinology
Dr. Jones has been following Calvin Shin for several years for obstructive sleep apnea. He had been doing well with reduced symptoms of daytime sleepiness since he had been using his CPAP machine. Dr. Jones was reviewing John's chart in his clinic. He missed his appointment several months ago but booked an urgent appointment through his family doctor. Calvin explains that he thinks his tongue, nose and lips have been getting thicker. He also states that he seems to be sweating and his skin feels thicker and oilier than it used to.
Tutorial: Pit Parapan MF3 Endocrinology
A 32-year-old female was seen in emergency department for abdominal pain, nausea and diarrhea. Her serum calcium was found to be elevated at 2.94 mmol/L (normal 2.15-2.55 mmol/L). She was treated with intravenous fluids. Her calcium improved to 2.65 mmol/L and she was discharged home to care for her 6-year-old son. She was referred urgently to an outpatient clinic to investigate her elevated calcium. She was also prescribed pantoprazole for worsening heartburn. In the clinic, Ms. Parapan reported a 2-year history of abdominal pain that was getting worse over time. The pantoprazole she was prescribed was modestly helpful in easing her heartburn and abdominal pain. She denied symptoms of polyuria, polydipsia, confusion or mood changes. There is no history of kidney stones. She had a fracture of her humerus at age 15 due to a ski accident. She was taking pantoprazole and a multivitamin daily. Ms. Parapan’s family history is significant for a father who had a pancreatic tumour, though she does not know any more details about his condition. Both her sister and her paternal aunt had a parathyroidectomy. The same aunt had a pituitary tumour requiring surgery.
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Thyroid Gland

Describe the anatomy, histology and basic embryology of the thyroid gland.

Anatomy Lectures: Endocrine System Anatomy
Endocrine system anatomy
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Outline the synthesis and secretion of thyroid hormones, the types of thyroid hormone and the feedback loops governing interactions between the pituitary gland and the thyroid gland.

Tutorial: Adam Pajek MF3 Endocrinology
A 40-year old man, Adam Pajek, was seen in a walk-in clinic complaining of palpitations, heat intolerance (felt hot when others were comfortable or cold), sweating, anxiety, weight loss, fatigue, and sleeplessness for two months. He reports that his sister has a hypothyroid problem for which she takes Eltroxin pills.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Explain the physiological function of thyroid hormone, including its effects on basal metabolic rate.

Tutorial: Adam Pajek MF3 Endocrinology
A 40-year old man, Adam Pajek, was seen in a walk-in clinic complaining of palpitations, heat intolerance (felt hot when others were comfortable or cold), sweating, anxiety, weight loss, fatigue, and sleeplessness for two months. He reports that his sister has a hypothyroid problem for which she takes Eltroxin pills.
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Explain the laboratory abnormalities and clinical manifestations seen in thyroid dysfunction.

Tutorial: Adam Pajek MF3 Endocrinology
A 40-year old man, Adam Pajek, was seen in a walk-in clinic complaining of palpitations, heat intolerance (felt hot when others were comfortable or cold), sweating, anxiety, weight loss, fatigue, and sleeplessness for two months. He reports that his sister has a hypothyroid problem for which she takes Eltroxin pills.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Describe the treatment of thyroid disease.

Tutorial: Adam Pajek MF3 Endocrinology
A 40-year old man, Adam Pajek, was seen in a walk-in clinic complaining of palpitations, heat intolerance (felt hot when others were comfortable or cold), sweating, anxiety, weight loss, fatigue, and sleeplessness for two months. He reports that his sister has a hypothyroid problem for which she takes Eltroxin pills.
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
1.5 Develop and carry out patient management plans
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Adrenal Gland

Outline the structure and function of the adrenal gland.

Anatomy Lectures: Endocrine System Anatomy
Endocrine system anatomy
Tutorial: Emily Bradstone MF3 Endocrinology
A 55 year old female, Emily Bradstone, is seen by a hematologist for easy bruising. No hematological problem was found. An internist also saw the patient. There has been a one-year history of easy bruising, weight gain, worsening of diabetes, difficulty climbing stairs and edema of the ankles
Tutorial: Pia Meta MF3 Endocrinology
Pia Meta is a 21-year-old female university student with paroxysmal attacks of palpitations, dizziness, blurring of vision and headache over the past 6 months. Each attack persists for a few minutes to half an hour. They occur irregularly with essentially no warning. She reports that during one of her attacks, she went to the emergency department and was found to have a blood pressure of 210/140 mmHg. She was told that she was having a panic attack. She was previously well and has no significant family history. Pia occasionally consumes alcohol on weekends only. She denies the use of any medications or recreational drugs, particularly methamphetamines or other sympathomimetics. She has one cup of coffee per day unless she is studying for exams, in which case she drinks 2-3 cups per day at most. She lives with roommates with whom she attends McMaster University. She has been performing well at school and has an active social life. On examination in the clinic, she has no abnormal physical findings.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Describe the control of each of the hormones produced by the adrenal gland.

Tutorial: Emily Bradstone MF3 Endocrinology
A 55 year old female, Emily Bradstone, is seen by a hematologist for easy bruising. No hematological problem was found. An internist also saw the patient. There has been a one-year history of easy bruising, weight gain, worsening of diabetes, difficulty climbing stairs and edema of the ankles
Tutorial: Pia Meta MF3 Endocrinology
Pia Meta is a 21-year-old female university student with paroxysmal attacks of palpitations, dizziness, blurring of vision and headache over the past 6 months. Each attack persists for a few minutes to half an hour. They occur irregularly with essentially no warning. She reports that during one of her attacks, she went to the emergency department and was found to have a blood pressure of 210/140 mmHg. She was told that she was having a panic attack. She was previously well and has no significant family history. Pia occasionally consumes alcohol on weekends only. She denies the use of any medications or recreational drugs, particularly methamphetamines or other sympathomimetics. She has one cup of coffee per day unless she is studying for exams, in which case she drinks 2-3 cups per day at most. She lives with roommates with whom she attends McMaster University. She has been performing well at school and has an active social life. On examination in the clinic, she has no abnormal physical findings.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Identify the diurnal pattern of adrenal cortex secretion, as well as the effect of stress on adrenal function.

Tutorial: Emily Bradstone MF3 Endocrinology
A 55 year old female, Emily Bradstone, is seen by a hematologist for easy bruising. No hematological problem was found. An internist also saw the patient. There has been a one-year history of easy bruising, weight gain, worsening of diabetes, difficulty climbing stairs and edema of the ankles
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Summarize the clinical manifestations of excess or inadequate production of adrenal hormones, especially with respect to glucocorticoids and catecholamines.

Tutorial: Pia Meta MF3 Endocrinology
Pia Meta is a 21-year-old female university student with paroxysmal attacks of palpitations, dizziness, blurring of vision and headache over the past 6 months. Each attack persists for a few minutes to half an hour. They occur irregularly with essentially no warning. She reports that during one of her attacks, she went to the emergency department and was found to have a blood pressure of 210/140 mmHg. She was told that she was having a panic attack. She was previously well and has no significant family history. Pia occasionally consumes alcohol on weekends only. She denies the use of any medications or recreational drugs, particularly methamphetamines or other sympathomimetics. She has one cup of coffee per day unless she is studying for exams, in which case she drinks 2-3 cups per day at most. She lives with roommates with whom she attends McMaster University. She has been performing well at school and has an active social life. On examination in the clinic, she has no abnormal physical findings.
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Describe Cushing Syndrome, its causes and its manifestations.

Tutorial: Emily Bradstone MF3 Endocrinology
A 55 year old female, Emily Bradstone, is seen by a hematologist for easy bruising. No hematological problem was found. An internist also saw the patient. There has been a one-year history of easy bruising, weight gain, worsening of diabetes, difficulty climbing stairs and edema of the ankles
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Sexual Differentiation

Describe the embryology and physiology of sexual differentiation and explain the possible mechanisms involved in the presentation of ambiguous genitalia.

Tutorial: Awat Khali MF3 Endocrinology
Awat Khali, a 3.2 kg female infant, is born to a 28 year old mother at 41 weeks gestation. The family is Muslim and has recently immigrated from the Kurdish region of Turkey. Her parents are first cousins. Each parent has numerous brothers and sisters and most have already had children. Everybody is reported as healthy and well. At delivery the child is noted to have atypical genital development. The clitoris is prominent, length being approximately 1.5 cm. There is posterior fusion of the labia.
Tutorial: Riley Walker MF3 Endocrinology
A healthy 3.6-kg baby boy, Riley, is born to a 25-year-old nulliparous mother in a community hospital. The family doctor notes that the boy's genital development is somewhat atypical. Her examination reveals that the infant has hypospadias, chordee and undescended testes. A plan is put in place for the infant to be seen by a pediatric urologist in 6 weeks with a view to eventual surgical correction. At one week of age, the infant is brought to the family physician's office for routine follow up. Riley's mother comments that he seems to be breastfeeding poorly. She describes him as increasingly uninterested in feeding and is concerned that he seems to be "spitting up" a lot. The infant now weighs 3.1 kg. A recommendation is made to begin some formula supplementation to help support weight gain. At 10 days of age, Riley's mother finds him in his crib, non-rousable, cool, mottled and covered in vomit. Riley is rushed to the emergency department via ambulance. In the emergency room, resuscitative measures are initiated. The airway is suctioned. He is intubated and hand-bagged to achieve ventilation. A 20 mL/kg bolus of normal saline is administered.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Explain the effect of 21-hydroxylase deficiency on adrenal pathways and apply it to an infant presenting with Congenital Adrenal Hyperplasia.

Tutorial: Riley Walker MF3 Endocrinology
A healthy 3.6-kg baby boy, Riley, is born to a 25-year-old nulliparous mother in a community hospital. The family doctor notes that the boy's genital development is somewhat atypical. Her examination reveals that the infant has hypospadias, chordee and undescended testes. A plan is put in place for the infant to be seen by a pediatric urologist in 6 weeks with a view to eventual surgical correction. At one week of age, the infant is brought to the family physician's office for routine follow up. Riley's mother comments that he seems to be breastfeeding poorly. She describes him as increasingly uninterested in feeding and is concerned that he seems to be "spitting up" a lot. The infant now weighs 3.1 kg. A recommendation is made to begin some formula supplementation to help support weight gain. At 10 days of age, Riley's mother finds him in his crib, non-rousable, cool, mottled and covered in vomit. Riley is rushed to the emergency department via ambulance. In the emergency room, resuscitative measures are initiated. The airway is suctioned. He is intubated and hand-bagged to achieve ventilation. A 20 mL/kg bolus of normal saline is administered.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Explain the impact of mutations of the androgen receptor on sexual phenotype.

Tutorial: Awat Khali MF3 Endocrinology
Awat Khali, a 3.2 kg female infant, is born to a 28 year old mother at 41 weeks gestation. The family is Muslim and has recently immigrated from the Kurdish region of Turkey. Her parents are first cousins. Each parent has numerous brothers and sisters and most have already had children. Everybody is reported as healthy and well. At delivery the child is noted to have atypical genital development. The clitoris is prominent, length being approximately 1.5 cm. There is posterior fusion of the labia.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Calcium Homeostasis

Describe the anatomy and physiology of the parathyroid glands.

Tutorial: Julian Knight MF3 Endocrinology
Mr. Knight is a 65-year-old obese male of African descent who works as a miner in Yellowknife, NWT. He smokes one pack of cigarettes per day. Outside of work he is generally sedentary and tends not to leave his home unless it is really necessary. He has a past medical history of type 2 diabetes mellitus, chronic kidney disease and COPD. His medications include metformin, sitagliptin and the inhalers ipratropium and fluticasone. He recently completed a course of prednisone for a COPD exacerbation, which he has a few times per year. He presented to the local Emergency Department after a fall at work. He tripped over a drill bit and fell on his outstretched hand. He felt a snap, followed by severe pain in the left wrist with noticeable swelling and bruising.
Tutorial: Pit Parapan MF3 Endocrinology
A 32-year-old female was seen in emergency department for abdominal pain, nausea and diarrhea. Her serum calcium was found to be elevated at 2.94 mmol/L (normal 2.15-2.55 mmol/L). She was treated with intravenous fluids. Her calcium improved to 2.65 mmol/L and she was discharged home to care for her 6-year-old son. She was referred urgently to an outpatient clinic to investigate her elevated calcium. She was also prescribed pantoprazole for worsening heartburn. In the clinic, Ms. Parapan reported a 2-year history of abdominal pain that was getting worse over time. The pantoprazole she was prescribed was modestly helpful in easing her heartburn and abdominal pain. She denied symptoms of polyuria, polydipsia, confusion or mood changes. There is no history of kidney stones. She had a fracture of her humerus at age 15 due to a ski accident. She was taking pantoprazole and a multivitamin daily. Ms. Parapan’s family history is significant for a father who had a pancreatic tumour, though she does not know any more details about his condition. Both her sister and her paternal aunt had a parathyroidectomy. The same aunt had a pituitary tumour requiring surgery.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Identify the role of vitamin D in calcium homeostasis.

Tutorial: Julian Knight MF3 Endocrinology
Mr. Knight is a 65-year-old obese male of African descent who works as a miner in Yellowknife, NWT. He smokes one pack of cigarettes per day. Outside of work he is generally sedentary and tends not to leave his home unless it is really necessary. He has a past medical history of type 2 diabetes mellitus, chronic kidney disease and COPD. His medications include metformin, sitagliptin and the inhalers ipratropium and fluticasone. He recently completed a course of prednisone for a COPD exacerbation, which he has a few times per year. He presented to the local Emergency Department after a fall at work. He tripped over a drill bit and fell on his outstretched hand. He felt a snap, followed by severe pain in the left wrist with noticeable swelling and bruising.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Explain the interplay among the major systems involved in maintaining calcium homeostasis including the parathyroid glands, the kidneys, the digestive system and the bony skeleton.

Tutorial: Julian Knight MF3 Endocrinology
Mr. Knight is a 65-year-old obese male of African descent who works as a miner in Yellowknife, NWT. He smokes one pack of cigarettes per day. Outside of work he is generally sedentary and tends not to leave his home unless it is really necessary. He has a past medical history of type 2 diabetes mellitus, chronic kidney disease and COPD. His medications include metformin, sitagliptin and the inhalers ipratropium and fluticasone. He recently completed a course of prednisone for a COPD exacerbation, which he has a few times per year. He presented to the local Emergency Department after a fall at work. He tripped over a drill bit and fell on his outstretched hand. He felt a snap, followed by severe pain in the left wrist with noticeable swelling and bruising.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Define osteoporosis and list secondary causes for this condition.

Tutorial: Julian Knight MF3 Endocrinology
Mr. Knight is a 65-year-old obese male of African descent who works as a miner in Yellowknife, NWT. He smokes one pack of cigarettes per day. Outside of work he is generally sedentary and tends not to leave his home unless it is really necessary. He has a past medical history of type 2 diabetes mellitus, chronic kidney disease and COPD. His medications include metformin, sitagliptin and the inhalers ipratropium and fluticasone. He recently completed a course of prednisone for a COPD exacerbation, which he has a few times per year. He presented to the local Emergency Department after a fall at work. He tripped over a drill bit and fell on his outstretched hand. He felt a snap, followed by severe pain in the left wrist with noticeable swelling and bruising.
1.3 Interpret laboratory data, imaging studies, and other tests required for the area of practice
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Describe the histology of bone and the hormonal regulation of its cellular components.

Tutorial: Julian Knight MF3 Endocrinology
Mr. Knight is a 65-year-old obese male of African descent who works as a miner in Yellowknife, NWT. He smokes one pack of cigarettes per day. Outside of work he is generally sedentary and tends not to leave his home unless it is really necessary. He has a past medical history of type 2 diabetes mellitus, chronic kidney disease and COPD. His medications include metformin, sitagliptin and the inhalers ipratropium and fluticasone. He recently completed a course of prednisone for a COPD exacerbation, which he has a few times per year. He presented to the local Emergency Department after a fall at work. He tripped over a drill bit and fell on his outstretched hand. He felt a snap, followed by severe pain in the left wrist with noticeable swelling and bruising.
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Anatomy

Understand surface anatomy of the thyroid gland, its lobes and isthmus, location, blood supply (superior, inferior and thyroidi ima arteries) (superior, middle and inferior thyroid veins) and its relation to recurrent laryngeal and superior laryngeal nerves.

Anatomy Lectures: Endocrine System Anatomy
Endocrine system anatomy
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Identify the parathyroid gland, its number, location, relation to the thyroid gland and its blood supply.

Anatomy Lectures: Endocrine System Anatomy
Endocrine system anatomy
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Identify and understand the adrenals, its location, divisions (cortex and medulla), blood supply and innervations.

Anatomy Lectures: Endocrine System Anatomy
Endocrine system anatomy
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Identify the pituitary, its divisions, location (sella turcica), and relation to cranial nerves (optic, oculomotor, trochlear, trigeminal and abducent nerves).

Anatomy Lectures: Endocrine System Anatomy
Endocrine system anatomy
2.2 Apply biomedical scientific principles fundamental to health care for patients and populations.

Tutorial Cases

Activities