Hypopituitarism

This topic examines hypopituitarism, the decreased secretion of pituitary hormones resulting from diseases of the pituitary or hypothalamus. Zambian tertiary students will learn that loss of approximately 75% of anterior pituitary parenchyma is required for clinical hypofunction. Causes range from congenital defects to acquired conditions like tumours, infarction (e.g., Sheehan's syndrome), inflammation, or trauma. The clinical presentation depends on which hormones are deficient and can include features of hypothyroidism, adrenal insufficiency, and hypogonadism. Understanding hypopituitarism is essential for diagnosing pan-hormonal deficiencies and managing patients with sellar lesions or a history of pituitary surgery. This knowledge is key for success in endocrinology and pathology examinations at Zambian colleges and universities.