Pathology - Pituitary and Adrenal Flashcards
the anterior/posterior pituitary is derived from Rathke’s pouch
the ANTERIOR pituitary is derived from Rathke’s pouch
what does the anterior pituitary secrete?
TSH
ACTH
FSH
LH
GH
prolactin
what does the posterior pituitary secrete?
ADH
ocytocin
the anterior/posterior contains non-myelinated axons of neurosecretory neurons
the POSTERIOR contains non-myelinated axons of neurosecretory neurons
name the 2 Amin conditions/diseases that affects the posterior pituitary
DM - lack of ADH
SIADH - ectopic secretion of ADH
pituitary adenoma mainly affects the anterior/posterior pituitary
pituitary adenoma mainly affects the ANTERIOR pituitary
name the functional pituitary adenomas from most to least common
prolactin - prolactinoma
GH secreting
ACTH secreting
symptoms of prolactinoma?
infertility, lack of libido, amenorrhea
symptoms of GH secreting adenoma?
bone growth, cartilage and connective tissue
gigantism or acromegaly
symptoms of ACTH secreting adenoma?
cushings disease
name the tumour derived from rathke’s pouch
craniopharyngioma
name the disease that results in chronic hypofunction of the adrenal cortex
Addison’s disease
name the acquired endogenous ACTH production disease via a pituitary adenoma
cushing’s disease
name the syndrome that results in primary hyperaldosteronism
conn’s syndrome
name the syndrome/disease that results in hypercortisolism
cushings syndrome/disease
name an exogenous cause of cushings
steroids
name the ACTH dependent endogenous cause of cushings
ACTH secreting pituitary adenoma
ectopic ACTH - SCLC
name the ACTH independent endogenous cause of cushings
adrenal adenoma
what can rapid withdrawal of steroids cause?
adrenal crisis
name the 3 causes of Addisons disease
autoimmune adrenalitis
infectious - TB etc.
metastatic malignancy
you get signs and symptoms of Addisons once __% of the gland is destroyed
you get signs and symptoms of Addisons once 90% of the gland is destroyed
Addisons symptoms?
weakness fatigue anorexia nausea and vomiting weight loss diarrhoea
pigmentation
there is __+ retentions and __+ loss in Addisons
there is K+ retentions and Na+ loss in Addisons
Addisons:
______kalaemia
____natraemia
_______tension
______glycaemia
HYPERkalaemia
HYPOnatraemia
HYPOtension
HYPOglycaemia
name the neoplasm derived from chromatin cells of the adrenal medulla that secretes catecholamines
phaechromocytoma
phaechromocytoma is the __% tumour
phaechromocytoma is the 10% tumour
phaechromocytoma is a rare cause of secondary what?
hypertension
what is a feature of MEN2A and MEN2B?
phaechromocytoma
name the 3 zones of the adrenal gland
zona glomerulosa
zona fasciculata
zona reticularis
how do you diagnose phaechromocytoma?
detection of urinary excretion of catecholamines and metabolites