Adrenal Gland Pathology Dr. Singh Flashcards
Cortex of adrenal gland has wha layers ad secretes what
- Zona Glomerulosa (Aldosterone) salt outer
- Zone Fasciculata (Cortisol) sweet middle
- Zona Reticularis (androgens) sex inner
Medulla of adrenal gland has wha layers ad secretes what
Chromaffin Cells = NE and Epi (catacholamines)
Adrenal hypercortisolism ACTH dependent + independent
- ACTH dependent = secondary cause, primary AP adenoma or ectopic
- ACTH independent = primary adrenal tumor or problem secreting too much Cortisol
ACTH dependent Cushing syndrome cause what to happen to the adrenal glands
Bilateral Cortical Hyperplasia
Primary hyperadrenalism ACTH independent causes what to happen to the gland
Cortical adenoma , yellow round mass
Giving high dose dexamethasone will suppress cortisol when and when will it not
- Will suppress it : AP microadenoma (cushings disease)
2. Will not suppress it : Adrenal primary tumor or hyperplasia, + Ectopic ACTH (corticotropin)
Conn’s Syndrome :
- From what
- SX
- Most common cause + 2 other causes
- High Aldosterone
- = HTN (severe over 160/100, refractory, young age)**
= Adrenal mass
= hypokalemia + HypoMg (not always seen) - Idiopathic : glomerular cells secrete too much aldosterone (others : high ACTH driven, adenoma)
Secondary Hyperaldosteronism :
1. Caused by what and causes what
- Anything activating renin-angiotensin - aldosterone system
(Diuretics, low renal perfusion, arterial hypovolemia, Pregnancy, Renin secreting tumors)
Low renal perfusion (like sclerosis = makes BV through renal capsules low) = makes body think you’re Hypovolemic
Hyperaldosteonism with low renin and high aldosterone what do you do
- Adrenal CT for any adrenal tumors (usually see in young pts 20-30yo)
- Tx HTN with aldosterone specific antagonists : Spironolactone (histology will show spironolactone bodies if pt was on this)
Adrenal Virilization
1. what makes this happen
- high ACTH increases androgens
- Primary Adrenal Reticularis tumor adenoma or CARCINOMA ** more commonly
- Congenital Adrenal Hyperplasia (CAH)
Congenital Adrenal Hyperplasia
- Is caused by what
- Causes what to happen worst thing that can happen
- AR X 21-Hydroxylase ( Xaldosterone + Xcortisol + HIGH Adrongens)
Low cortisol will never block ACTH from being secreted
2. Salt wasting syndrome
21-Hydroxylase deficiency causes what and what does that cause and what syndrome is this from
Congenital Adrenal Hyperplasia = Salt wasting syndrome
- no cortisol + No mineralocorticoids (most severe form)
- HYPONATRIEMIA , hypokalemia, hypotension
- Virulizaion in females (Cliteromegaly + fused labia)
Simple Virulization syndrome is what
Partial loss of 21-Hydroxylase ( NO salt wasting syndrome)
= just virulization
Nonclassic / Late onset adrenal virilism is what
Partial loss of 21-Hydroxylase
= precocious puberty
= acne + hirsutism during puberty
Congenital adrenal hyperplasia is dx how
Measure 17-Hydroxyprogesterone levels OR give 17-Hydroxyprogesterone and see if cortisol increases
(17-Hydroxyprogesterone + 21-Hydroxylase ——-> Cortisol)
+ HEEL STICKS IN INFANTS ARE USED NOW
CAH tx
GLUCOCORTICOIDS (cortisol) and minerocorticoids as necessary
Primary Acute Adrenocortical insufficiency
- what happens and
- Can happen from
- Low cortisol released from cortical cells (cortical atrophy)
- Rapid withdrawal from steroids
Massive adrenal hemorrhage (Waterhouse’s Friderichsen syndrome)
Stress, infections, trauma, burns
What does an adrenal crisis looks like **
ACUTE ABD pain + FEVER + HYPOTENSION (not solved with fluids) = low glucose, K+ , Na+
= GIVE STEROID REPLACEMENT