Classic Labs/Findings Flashcards
anticentromere antibodies (antibodies = Ab)
scleroderma (CREST)
antidesmoglein (epithelial) Ab
Pemphigus vulgaris (blistering)
Anti-glomerular basement membrane Ab
Goodpasture’s syndrome (glomerulonephritis and hemoptysis)
Antihistone Ab
Drug-induced SLE
hydralazine, isoniazid, phenytoin, procainamide
Anti-IgG Ab
RA
systemic inflammation, joint pannus, boutonniere deformity
Antimitochondrial Ab (AMA)
primary biliary cirrhosis
(female, cholestasis, portal hypertension
Antineutrophil cytoplasmic Ab (ANCA)
vasculitis
(C-ANCA; granulomatosis with polyangiitis - Wegener’s)
(P-ANCA; microscopic polyangiitis - Churg-Stauss)
Antinuclear Ab
ANAs - anti-smith, anti-dsDNA
SLE
type III HS
Antiplatelet Ab
idiopathic thrombocytopenic purpura
Anti-topoisomerase Ab
Diffuse systemic scleroderma
Anti-transglutaminease/anti-gliadin/anti-endomysial Ab
Celiac disease
diarrhea, distension, weight loss
“apple core” lesion on ab xray
colorectal cancer (usually left-sided)
azurophilic peroxidase-positive granular inclusions in granulocytes and myeloblasts
Auer rods (AML; especially promyelocytic (M3) type)
Bacitracin response
sensitive: S. pyogenes (Group A)
resistant: S. agalactiae (group B)
“Bamboo spine” on x-ray
ankylosing spondylitis
Chronic inflam arthritis: HLA-B27
Basophilic nuclear remnants of RBCs
Howell-Jolly bodies
Howell-jolly bodies are due to…
splenectomy or nonfunctional spleen
basophilic stippling of RBCs
lead poisoning or sideroblastic anemia
Bloody tap on LP
subarchnoid hemorrhage
“boot shaped’ heart on xray
tetralogy of fallot, RVH
branching gram positive rods with sulfur granules
actinomyces israeli
bronchogenic apical lung tumor on imaging
pancost tumor
what can pancoast tumor cause
compression of sympathetic ganglion and cause Horner’s syn
“Brown” tumor of bone
hyperparathyroidism or
osteitis fibrosa cystica
what is the reason for the “brown” in “brown” tumor of bone
deposited hemosiderin from hemorrhage gives brown color
cardiomegaly with apical atrophy
chagas’ disease
T. cruzi
cellular crescents in Bowman’s capsule
rapidly progressive crescentic glomerulonephritis
“chocolate cyst” of ovary
endometriosis
frequently involves both ovaries
circular grouping of dark tumor cells surrounding pale neurofibrils
homer-wright rosettes
where do you see homer-wright rosettes
neuroblastoma, medulloblastoma, retinoblastoma
colonies of mucoid pseudomonas in lungs
cystic fibrosis
what is cystic fibrosis
autosomal recessive
mutation in CFTR –> fat-soluble vit deficiency and mucous plug
decreased alpha-fetoprotein in amniotic fluid/maternal serum
down syndrome or other chromosomal abnormality
degeneration of dorsal column nerves
tabes dorsalis, subacute combined degeneration
what is affected in subacute combined dengenration
dorsal columns and lateral corticospinal tracts affected
depigmentation of neurons in substantia nigra
parkinson’s disease
basal ganglia disorders: rigidity, resting tremors, bradykinesia
desquamated epithelium casts in sputum
Curschmann’s spirals
where do you find Curschmann’s syndrome
bronchial asthma- can result in whorled mucous plugs
disarrayed granulosa cells in eosinophilic fluid
call-exner bodies
granulosa-theca cell tumor of the ovary
dyplastic squamous cervical cells with nuclear enlargement and hyperchromasia
koilocytes
HPV- predisposes to cervical cancer
enlarged cells with intranuclear inclusion bodies
“owl’s eye” of CMV
enlarged thyroid cells with ground-glass nuclei
“Orphan Annie’s eye” nuclei
papillary carcinoma of the thyroid
eosinophilic cytoplasmic inclusion in liver cell
mallory bodies (alcohol liver disease)
eosinophilic cytoplasmic inclusion in nerve cell
lewy body (parkinson’s disease)
eosinophilic globule in liver
Councilman body (toxic or viral hepatitis, often yellow fever)
eosinophilic inclusion bodies in cytoplasm of hippocampal nerve cell
negri bodies of rabies (Lyssavirus)
extracellular amyloid deposition in gray matter of brain
senile plaques
Alzheimer’s disease
Giant B cells with bilobed nuclei with prominent inclusions (“owl’s eye”)
Reed-Sternberg cells
Hodgkin’s Lymphoma
Glomerulus-like structure surrounding vessel in germ cells
Schiller-Duval bodies (yolk-sac tumor)
“hair on end” (crew cut) appearance on xray
B-Thalassemia, sickle cell anemia (marrow expansion)
hCG elevated
Choriocarcinoma, hydatidiform mole (occurs with and without embryo)
heart nodules (granulomatous)
Aschoff bodies (rheumatic fever)
heterophile Ab
infectious mononucleosis (EBV)
hexagonal, double-pointed, needle-like crystals in bronchial secretions
bronchial asthma (Charcot-Leyden crystals: eosinophilic granules)
high level of D-dimers
DVT, pulmonary embolism, DIC
hilar lymphadenopathy, peripheral granulomatous lesion in middle or lower lung lobes (can calcify)
Ghon complex
When is Ghon complex formed/found
primary TB, mycobacterium bacilli
“honeycomb lung” on xray or CT
interstitial pulmonary fibrosis
hypercoagulability (leading to migrating DVTs and vasculitis)
Trousseau’s syndrome
Trousseau’s syndrome is found …
adenocarcinoma of pancreas or lung
hypersegmented neutrophils
megaloblastic anemia (b12 def - neurologic symptoms; folate def - no neurologic sympt)
HTN, hypokalemia, metabolic alkalosis
Conn’s syndrome
hypochromic, microcytic anemia
iron def, lead poisoning, thalassemia (fetal Hb sometimes present)
increased a-fetoprotein in amniotic fluid/maternal serum
dating error, anencephaly, spina bifida (neural defect)
increased uric acid levels
gout, lesch-nyhan syndrome, tumor lysis syndrome, loop and thiazide diuretics
intranuclear eosinophilic droplet-like bodies
cowdry type A bodies (HSV and CMV)
iron-containing nodules in alveloar septum
Ferruginous bodies (asbestosis: increase chance of mesothelioma)
keratin pearls on a skin biopsy
squamous cell carcinoma
large lysosomal vesicles in phagocytes, immunodeficiency
Chediak-Higashi
congenital failure of phagolysosome formation
“lead pipe” appearance of colon on barium enema xray
Ulcerative colitis (loss of haustra)
linear appearnce of IgG deposition on glomerular basement membrane
goodpasture’s syndrome
low serum ceruloplasmin
wilson’s disease (hepatolenticular degeneration)
“lumpy bumpy” appearance of glomeruli on IF
poststreptococcal glomerulonephritis
what is poststreptococcal glomerulonephritis
immune complex deposition of IgG and C3b
lytic (“hole punched”) bone lesions on xray
multiple myeloma
mammary gland (“blue domed”) cyst
fibrocystic change of the breast
monoclonal Ab spike
multiple myeloma (IgG or IgA) MGUS - normal consquence of aging waldenstrom's (M protein = IgM) macroglobulinemia) primary amyloidosis
mucin-filled cell with peripheral nuclues
signet ring (gastric carcinoma)
narrowing of bowel lumen on barium xray
“string sign” (Crohn’s)
necrotizing vasculitis (lungs) and necrotizing glomerulonephritis
granulomatosis with polyangiitis (wegener’s - c-ANCA)
Goodpasture’s (Anti-basement membrane Ab)
needle-shaped, negatively birefringent crystals
gout (monosodium urate crystals)
nodular hyaline deposits in glomeruli
Kimmelstiel-Wilson (diabetic nephropathy)
novobiosin response
sensitive: S. epi
resistant: S. sapro
“nutmeg” appearance of liver
chronic passive congestion of liver d/t right heart failure
“onion skin” periosteal rxn
Ewing’s sarcoma (malignant round-cell tumor)
optochin response
sensitive: S. pneumoniae
resistant: Viridans Strep.
periosteum raised from bone, creating triangular area
Codman’s triangle on x-ray (osteosarcoma, Ewing’s sarcoma, pyogenic osteomyelitis)
Podocyte fusion or “effacement” on electron microscopy
minimal change disease (child with nephrotic syndrome)
Polished, “ivory-like” appearance of bone at cartilage erosion
Eburnation (OA resulting in bony sclerosis)
protein aggregates in neurons from hyperphosphorylation of protein tau
Neurofibrillary tangles (Alzheimer's) Pick's bodies (Pick's disease)
psammoma bodies
meningiomas, papillary thyroid carcinoma, mesothelioma, papillary serous carcinoma of the endometrium and ovary
pseudopalisading tumor cells on brain biopsy
glioblastoma multiforme
RBC casts in urine
acute glomerulonephritis (post-strep)
Rectangular, crystal-like, cytoplasmic inclusions in Leydig cells
Reinke crystals (Leydig cell tumor)
renal epithelial cast in urine
acute toxic/viral nephrosis
rhomboid crystals, positively birefringent
pseudogout (Ca pyrophosphate dihydrate crystals)
rib notching
coarctation of the aorta
ring-enhancing brain lesions in AIDS
toxoplasma gondii, CNS lymphoma
sheets of medium-sized lymphoid cells with scattered pale, tingible body-laden macrophages (“starry sky”
Burkitt’s lymphoma (t[8;14]), c-myc activation
Burkitt’s lymphoma is associated with what bug
EBV (“black sky” of malignant cells)
silver-staining spherical aggregation of tau proteins in neurons
Pick bodies (Pick’s disease- progressive dementia, personality change)
“soap bubble” in femur or tibia on x-ray
Giant cell tumor of bone (benign)
“spikes” on basement membrane, “dome like” subepithelial deposits
membranous glomerulonephritis
stacks of RBC
Rouleaux formation (high ESR, multiple myeloma)
stipple vaginal epithelial cells
“clue cells”
gardnerella vaginalias
“tennis racket” shaped cytoplasmic organelles in Langerhans cells
Birbeck granules (langerhans cell histiocytosis or histiocytosis X: eosinophilic granulomas)
Thrombi made of white/red layers
Lines of Zahn
arterial thrombus, layers of platelets/RBC
Thyroid-like appearance of kidney
chronic bacterial pyelonephritis
“thumb sign” on lateral xray
Epiglottitis (HiB)
Tram-track appearance of capillary loops of glomerular basement membranes on light microscopy
membranoproliferative glomerulonephritis
TG accumulation in liver cell vacuoles
Fatty liver disease
alcoholic or metabolic syndrome
“waxy” casts in urine
chronic end-stage renal disease
WBC cast in urine
acute pyelonephritis
WBCs that look smudge
CLL
“wire loop” glomerular capillary appearance on light microscopy
Lupus nephropathy
Yellowish CSF
Xanthochromia
d/t subarachnoid hemorrhage