7/31 Flashcards
lowers LDL
inhibits HMG CoA reductase in liver, so more LDL is cleared from circulation with increased LDL receptors
statin
myopathy, hepatotoxicity
lowers LDL
bile acid binding resins
liver must use cholesterol to make more
Cholestyramine
GI upset
lowers LDL
blocks intestinal absorption of cholesterol at brush border
Ezetimibe
diarrhea
lowers Triglycerides
upregulates LPL to increase triglyceride clearance
activates PPAR-alpha to induce HDL synthesis
Fibrates
myopathy, esp with statins
cholesterol gallstones
lowers LDL, increases HDL
inhibits lipolysis via inibiting HPL
reduces hepatic VLDL synthesis
Niacin/B3
red/flushed face
hyperglycemia
hyperuricemia
GLP-1 agonist
decrease gastric emptying
Exentide
pancreatitis
requires some functional beta cells
DPP-4 inhibitor
decrease gastric emptying by preventing breakdown of GLP-1
-gliptans
nasopharyngitis
inhibits TPO and 5’deiodinase
inhibits TPO only
PTU
methimazole
bind hydroxyappetite to inhibit osteoclasts
bisphosphonate
inspiration ____ venous return
increases
it drops intrathoracic pressure
valsalva ____ intrathoracic pressure
increases
standing up ____ preload
decreases
rapid squatting or leg raise ____
venous return
preload
afterload
increase
increase
increase
serum tumor markers:
Alk phos
bone or liver
seminoma
serum tumor markers:
AFP
HCC
yolk sac tumor
mixed germ cell tumor
serum tumor markers:
beta-hCG
Hydatidiform moles Choriocarcinomas Gestational Trophoblastic disease (HCG) testicular cancer mixed germ cell tumor
produced by syncytiotrophoblasts of placenta
CA 15-3/CA 27-29
breast cancer
CA 19-9
pancreatic adenocarcinoma
“9 = P”
CA 125
ovarian cancer
calcitonin
medullary thyroid cancer
thyroid:
most absence of capsular vascular invasion
“colloid-containing micro follicles”
usually nonfunctional, painless
thyroid adenoma
thyroid: most common, excellent prognosis Orphan Annie Eyes psammoma bodies nuclear grooves RET and BRAF mutations ionizing radiation
Papillary carcinoma
thyroid:
invades thyroid capsule and vasculature
UNIFORM follicles
RAS mutation
follicular carcinoma
thyroid: from parafollicular C cells produces calcitonin sheets of cells in amyloid stroma (Congo Red) MEN2A/B (RET) mutation
Medullary carcinoma
thyroid:
older pts
invading local structures
pleomorphic giant cells
undifferentiated/anaplastic carcinoma
ovarian:
Call-Exner bodies
collections of eosinophilic fluid
appress yellow
granulosa cell tumor
ovarian: aggressive ovaries and testicles yellow, friable, sold mass Schiller-Duval bodies (~glomeruli) AFP tumor marker
Yolk sac (endodermal sinus) tumor
ovarian:
GI malignancy that metastasizes to ovaries
mucin secreting signet cell adenocarcinoma
Krukenberg tumor
uniformly enlarged, soft, globular uterus
extension of endometrial tissue into myometrium
adenomyosis
estrogen sensitive endometrial tumor
irregular uterine enlargement
consipation, urinary problems
leiomyoma/fibroid
postmenopausal vaginal bleeding, anovulatory cycles, hormone replacement therapy, PCOS, etc
excess unopposed estrogen
endometrial hyperplasia
older F, vaginal bleeding
estrogen without progesterones
Histology: atypical endometrial cells that form glands
endometrial carcinoma
uterine tenderness, fever, tachy
retained products of conception or foreign body
endometritis
decidua infection
endometrial tissue outside endometrial cavity
chocolate cyst
endometriosis
CNS: "butterfly" "pseudopalisading" pleomorphic tumor cells border central areas of necrosis GFAP positive found in cerebral hemispheres
glioblastoma (astrocytoma)
CNS: arachnoid cell origin dural attachment "tail" asymptomatic,, or seizures spindle cells in whorled pattern psammoma bodies
meningioma
spider in the bathtub
VHL CNS tumor
most often cerebellar
hemangioblastoma
CNS: cerebellopontine angle, CN8 hearing loss S-100 +
schwannoma
CNS: frontal lobe chicken wire capillaries fried egg oligodendrocytes often calcified
oligodendroglioma
CNS:
posterior fossa/cerebelum
GFAP +
Rosenthal fibers- eosinophilic corkscrew fibers
pilocytic astrocytoma
CNS:
compress 4th ventricle, causing noncommunicating hydrocephalus
Homer-Wright Rosettes
small blue cells
medulloblastoma
Water Boy
CNS:
4th ventricle
perivascular rosettes
rod-shaped blepharoplasty (basal ciliary bodies)
ependymoma
CNS
confused w/ pituitary adenoma for bitemporal hemianopia
remnant sof Rathke pouch
calcifications
cholesterol crystals found in “motor oil or wet keratin”
craniopharyngioma
CNS:
Parinaud syndrome (compression of tectum, vertical gaze palsy)
obstructive hydrocephalus
precocious puberty in M (beta-HCG)
histologically similar to germ cell tumors
pinealoma
hypercellular glomeruli
starry sky- granular IF
IgG, IgM, C4 deposition in GBM
sub epithelial immune complex humps on EM
most frequently seen in children 2/2 strep infection
Type 3 HSN
PSGN
crescent moon shape on
crescents made of Fibrin (crescent rolls have fiber) and plasma proteins and macrophages
RPGN
includes Goodpasture, Wegener
Microscopic polyangitis
Pauli-Immune RPGN
no BM deposits
c-ANCA
Wegener
Granulomatous with polyangiitis
type 2 HSN
antibodies to GBM and alveolar BM
linear IF
Goodpasture syndrome
SLE renal problem
“wire looping” capillaries
immune complex deposition
diffuse proliferative glomerulonephritis
membranoproliferative GN
IgA deposits in mesangium
renal path of Henoch-Schonlein Purpura
IgA nephropathy
Berger disease
episodic gross hematuria that occurs w/ resp or GI infection (IgA is secreted by mucosal linings)
IgA nephropathy
mutated type 4 collagen- splitting GBM
old, can’t see, can’t pee, can’t hear a bee, basket-weave”
Alport
renal “tram track” on PAS stain 2/2 GBM splitting
membranoproliferative GN
effacement of foot processes
recurrent infections, immunization
hypoalbinemia
MCD
segmental sclerosis
focal deposits of IgM, C3
FSGN
diffuse GBM thickening
spike and dome appearance
SLE
antibodies to PLA2 receptor
membranous GN
Kimmelstiel-Wilson lesions
diabetic GN
telangiectasis, epistaxis, AV malformations, GI bleeds, hematuria
Hereditary hemorrhagic telangiectasia
AKA Osler Weber Rendu syndrome
TP53 "SBLA" cancer syndrome sarcoma breast leukemia adrenal gland
Li Fraumeni
cafe au last spots cutaneous neurofibromas optic gliomas pheochromocytoma, Lisch nodules
NF1
Von Recklinghausen