10 results
Feedback Loop: Prolactin (PRL)
 • PRL levels exhibit diurnal, menstrual, and age-related variation
 • TRH has
Prolactin #PRL #FeedbackLoop ... #endocrinology ... #pathophysiology ... #pituitary
Feedback Loop: Growth Hormone (GH)
Growth Hormone:
 • Liver -> GHR activates JAK-STAT pathway -> Incr IGF1
GrowthHormone #GH #FeedbackLoop ... #endocrinology ... #pathophysiology ... #pituitary
Adrenal Insufficiency - Differential Diagnosis Workup Algorithm
Primary Adrenal Insufficiency:
 • Autoimmune primary adrenal insufficiency
 • Adrenoleukodystrophy,
Diagnosis Workup Algorithm ... Primary Adrenal ... • Autoimmune primary ... ACTH-deficiency • Combined pituitary ... #endocrinology
Breast Discharge - Differential Diagnosis Algorithm
High Prolactin + Normal TSH
 • Microprolactinoma
 • Steroid Hormone Intake
Differential Diagnosis Algorithm ... Normal/ Low TSH • Pituitary ... Inhibition • Pituitary ... + High TSH • Primary ... #Endocrinology
Primary vs Secondary Adrenal Insufficiency - Pathophysiology
Primary AI = adrenal glands themselves are the problem. This
Primary vs Secondary ... Insufficiency - Pathophysiology ... Secondary AI = the pituitary ... Insufficiency #Pathophysiology ... #endocrinology
Sellar / Pituitary Mass - Differential Diagnosis Algorithm
Adenoma - Primary Anterior Pituitary
 - Secreting
Sellar / Pituitary ... Differential Diagnosis Algorithm ... Adenoma - Primary ... Differential #Diagnosis #Algorithm ... #endocrinology
Primary Hyperthyroidism - Pathogenesis and Clinical Findings

Note: Although rare, gestational diseases can lead to thyrotoxicosis due
Primary Hyperthyroidism ... production by the pituitary ... Pretibial myxedema #Primary ... Hyperthyroidism #endocrinology ... #pathophysiology
Causes of Adrenal Insufficiency - Differential Diagnosis Algorithm
ACTH-Dependent (Secondary):
 • Pituitary Dysfunction
 • Hypothalamic Dysfunction
ACTH-Independent (Primary):
Differential Diagnosis Algorithm ... Secondary): • Pituitary ... ACTH-Independent (Primary ... Differential #Diagnosis #Algorithm ... #Causes #endocrinology
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
high T4 +/- T3 → Primary ... Hyperthyroidism → MRI Pituitary ... Hyperthyroidism #algorithm ... #diagnosis #endocrinology
Diagnosis Adrenal Insufficiency - Algorithm

Step 1) Screening Test: 6-8AM Cortisol Level
 - Early morning cortisol levels
Insufficiency - Algorithm ... Differentiate primary ... . problem with pituitary ... consistent with primary ... #Stimulation #Endocrinology