PITUITARY DISEASE Flashcards
Endocrine disease
dysfunction of hormone secreting glands through negative feedback regulation
primary endocrine disease
gland failure
secondary endocrine disease
control failure
multiple endocrine neoplasia
genetic problems cause tumors that affect a collection of glands that grow from the same tissue
types of multiple endocrine neoplasia
MEN 1 (Wermer syndrome)
MEN 2a
MEN 2b
MEN 1
neoplasia of the parathyroid, pancreatic islets, anterior pituitary
associated tumours with MEN 1
adrenal cortex
carcinoid
lipoma
MEN 2a
neoplasia of parathyroid, medullary thyroid, phaeochromocytoma
MEN 2B
neoplasia of medullary thyroid, phaeochromocytoma
mucosal neuromas
marfanoid appearance
where is the pituitary gland
sits in the middle of skull base (cella turcica)
controls gland activity
what hormones does ant pituitary produce
TSH
ACTH
GH
LH, FSH, prolactin
what hormones does post. pituitary produce
antidiuretic hormone
oxytocin
antidiuretic hormone
regulates water balance by controlling kidneys
uncontrolled antidiuretic hormone leads to
diabetes insipidus
types of adenomas
functional
non-functional
functional adenomas
produce active hormone and compress tumour tissue
functional adenomas cause
cushings syndrome in under 40 year olds
acromegaly in over 40 year olds
cushings sydrome
too much cortisol
non functional adenoma
tumour has no secreting ability but puts pressure on other gland - suppressing hormone release
excess growth hormone results in
‘giantism’ in children
acromegaly in adults
growth hormone deficiency results in
change in vitality and general wellbeing
GH is measured by
IGF-1 levels
high IGF-1 in puberty is strongly suggestive of acromegaly developing
acromegaly features
course features - enlarges supraorbital ridges, broad nose, thickened lips and soft tissues
enlarged hands - carpal tunnel syndrome and finger numbness
type 2 DM - insulin resistance from increased GH
CV disease - IHD and acromegalic cardiomyopathy
acromegaly dental aspects
enlarged tongue
interdental spacing
reversed overbite
‘shrunk’ dentures