503 results
Hormonal Secretions of the Adrenal Gland

#Adrenal #Gland #Cortex #Medulla #Hormones #Pathophysiology #Endocrinology
Hormonal Secretions ... Pathophysiology #Endocrinology
Acromegaly 
Caused by over-secretion of growth hormone (GH) from the pituitary gland. 
The condition is rare
Caused by over-secretion ... Symptoms #Diagnosis #Endocrinology
Hypercortisolism (Cushing syndrome) - Simplified Differential Diagnosis Algorithm
Exogenous (ACTH-independent)
Endogenous
 • ACTH-dependent:
    - ACTH-secreting
ACTH-dependent: - ACTH-secreting ... Disease) - ACTH-secreting ... Diagnosis #Algorithm #endocrinology
Feedback Loop: Prolactin (PRL)
 • PRL levels exhibit diurnal, menstrual, and age-related variation
 • TRH has
regulator of PRL secretion ... Hypothalamus -> Decr GnRH secretion ... #FeedbackLoop #endocrinology
Differentiation of Causes of Hyperthyroidism According to Pattern of Radionucleotide Uptake
Reduced uptake:
 • Thyroiditis
 • Exogenous
thyroid hormone secretion ... hyperthyroidism #endocrinology
Hirsutism - Differential Diagnosis
Defined as excessive dark, coarse, male-pattern hair growth
Hirsutism causes in premenopausal women:
 •
Acromegaly, Androgen-secreting ... hyperthecosis • Androgen-secreting ... Differential #Diagnosis #endocrinology
Growth Hormone Excess - Pathogenesis and clinical findings
 • Acromegaly and gigantism share the same pathophysiology
tumors and ectopic secretion ... Excess Insulin Secretion ... signs #symptoms #endocrinology
Primary Hyperthyroidism - Pathogenesis and Clinical Findings

Note: Although rare, gestational diseases can lead to thyrotoxicosis due
due to excess secretion ... Hyperthyroidism #endocrinology
Hyperthyroidism - Differential Diagnosis Algorithm
High/Normal Radioiodine Uptake
 - Autoimmune Thyroid Disease:
    • Grave's
Excess: • TSH-Secreting ... Diagnosis #Algorithm #endocrinology
Menstrual Cycle Physiology: Ovarian Cycle – Follicular Phase Explained
Early Follicular Phase (Days 0-5)
 • Granulosa cells
follicle switch to secreting ... balance in steroid secretion ... early estrogen secretion ... > inhibits FSH secretion ... FollicularPhase #endocrinology