Classic Labs/Findings Flashcards
Classic Labs/Findings
↑ AFP in amniotic fluid/maternal serum
Dating error, anencephaly, spina bifida (neural tube defects)
Classic Labs/Findings
Anticentromere antibodies
Scleroderma (CREST)
Classic Labs/Findings
Anti-desmoglein (anti-desmosome) antibodies
Pemphigus vulgaris (blistering)
Classic Labs/Findings
Anti-glomerular basement membrane antibodies
Goodpasture syndrome (glomerulonephritis and hemoptysis)
Classic Labs/Findings
Antihistone antibodies
Drug-induced SLE (eg hydralazine, isoniazid, phenytoin, procainamide)
Classic Labs/Findings
Anti-IgG antibodies
Rheumatoid arthritis (systemic inflammation, jint pannus, boutonniere deformity)
Classic Labs/Findings
Antimitochondrial antibodies (AMAs)
1° biliary cirrhosis (female, cholestasis, portal hypertension)
Classic Labs/Findings
Antineutrophil cytoplasmic antibodies (ANCAs)
Microscopic polyangitis and eosinophilic granulomatosis with polyangiitis (Churg-Strauss syndrome) (MPO-ANCA/p-ANCA)
Granulomatosis with polyangiitis (Wegener) (PR3-ANCA/c-ANCA
Classic Labs/Findings
Antinuclear antibodies (ANAs: anti-Smith & anti-dsDNA)
SLE (type III hypersensitivity)
Classic Labs/Findings
Antiplatelet antibodies
Idiopathic thrombocytopenic purpura
Classic Labs/Findings
Anti-topoisomerase antibodies
Diffuse systemic scleroderma
Classic Labs/Findings
Anti-transglutaminase/anti-gliadin/anti-endomysial antibodies
Celiac disease (diarrhea, weight loss)
Classic Labs/Findings
“Apple core” lesion on barium enema x-ray
Colorectal cancer (usually left-sided)
Classic Labs/Findings
Atypical lymphocytes
EBV
Classic Labs/Findings
Azurophilic peroxidase ⊕ granular inclusions in granulocytes and myeloblasts
Auer rods (AML, especially the promyelocytic [M3] type)
Classic Labs/Findings
Bacitracin response
Sensitive: S. pyogenes (group A)
Resistant: S. agalactiae (group B)
Classic Labs/Findings
“Bamboo spine” on X-ray
Ankylosing spondylitis (chronic inflammatory arthritis HLA-B27)
Classic Labs/Findings
Basophilic nuclear remnants in RBCs
Howell-Jolly bodies (due to splenectomy or nonfunctional spleen)
Classic Labs/Findings
Basophilic stippling of RBCs
Lead poisoning or sideroblastic anemia
Classic Labs/Findings
Bloody or yellow tap on lumbar puncture
Subarachnoid hemorrhage
Classic Labs/Findings
“Boot-shaped” heart on X-ray
Tetralogy of Fallot (due to RVH)
Classic Labs/Findings
Branching gram ⊕ rods with sulfur granules
Actinomyces israelii
Classic Labs/Findings
Bronchogenic apical lung tumor on imagaing
Pancoast tumor (can compress sympathetic chain and cause Horner syndrome)
Classic Labs/Findings
“Brown” tumor of bone
Hyperparathyroidism or osteitis fibrosa cystica (deposited hemosiderin from hemorrhage gives brown color)
Classic Labs/Findings
Cardiomegaly with apical atrophy
Chagas disease (Trypanosoma cruzi)
Classic Labs/Findings
Cellular crescents in Bowman capsule
Rapidly progressive crescentic glomerulonephritis
Classic Labs/Findings
“Chocolate cyst” of ovary
Endometriosis (frequently involves both ovaries)
Classic Labs/Findings
Circular grouping of dark tumor cells surrounding pale neurofibrils
Homer-Wright rosettes (neuroblastoma, medulloblastoma)
Classic Labs/Findings
Colonies of mucoid Pseudomonas in lungs
Cystic fibrosis (autosomal recessive mutation in CFTR gene → fat-soluble deficiency and mucous plugs)
Classic Labs/Findings
↓ AFP in amniotic fluid/maternal serum
Down syndrome or other chromosomal abnormalities
Classic Labs/Findings
Degeneration of dorsal column fibers
Tabes dorsalis (3° syphilis), subacute combined degeneration (dorsal columns, lateral corticospinal, spinocerebellar tracts affected)
Classic Labs/Findings
“Delta wave” on EKG, short PR interval, supraventricular tachycardia
Wolff-Parkinson-White syndrome (Bundle of Kent bypasses AV node)
Classic Labs/Findings
Depigmentation of neurons in substantia nigra
Parkinson disease (basal ganglia disorder: rigidity, resting tremor, bradykinesia)
Classic Labs/Findings
Desquamated epithelium casts in sputum
Curschmann spirals (bronchial asthma; can result in whorled mucous plugs)
Classic Labs/Findings
Disarrayed granulosa cells arranged around collections of eosinophilic fluid
Call-Exner bodies (granulosa cell tumor of the ovary)
Classic Labs/Findings
Dysplastic squamous cervical cells with “raisinoid” nuclei and hyperchromasia
Koilocytes (HPV: predisposes to cervical cancer)
Classic Labs/Findings
Electrica alternans (alternating amplitude on EKG)
Pericardial tamponade
Classic Labs/Findings
Enlarged cells with intranuclear inclusion bodies
“Owl eye” appearance of CMV
Classic Labs/Findings
Enlarged thyroid cells with ground-glass nuclei with central clearing
“Orphan Annie” eyes nuclei (papillary carcinoma of the thyroid)
Classic Labs/Findings
Eosinophilic cytoplasmic inclusion in liver cell
Mallory body (alcoholic liver disease)
Classic Labs/Findings
Eosinophilic cytoplasmic inclusion in neuron
Lewy body (Parkinson disease & Lewy body dementia)
Classic Labs/Findings
Eosinophilic globule in liver
Councilman body (viral hepatitis, yellow fever) - represents hepatocyte undergoing apoptosis
Classic Labs/Findings
Eosinophilic inclusions bodies in cytoplasm of hippocampal and cerebellar neurons
Negri bodies of rabies
Classic Labs/Findings
Extracellular amyloid deposition in gray matter of brain
Senile plaques (Alzheimer disease)