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Rapid Review Notecards > Classic Labs/Findings > Flashcards

Classic Labs/Findings Flashcards

1
Q

Anticentromere antibodies

A

Scleroderma (CREST)

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2
Q

Antidesmoglein (epithelial) antibodies

A

Pemphigus vulgaris (blistering)

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3
Q

Anti–glomerular basement membrane antibodies

A

Goodpasture syndrome (glomerulonephritis and hemoptysis)

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4
Q

Antihistone antibodies

A

Drug-induced SLE (hydralazine, INH, phenytoin, procainamide)

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5
Q

Anti-IgG antibodies

A

Rheumatoid arthritis (systemic inflammation, joint pannus, boutonnière deformity)

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6
Q

Antimitochondrial antibodies (AMAs)

A

1° biliary cirrhosis (female, cholestasis, portal hypertension)

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7
Q

Antineutrophil cytoplasmic antibodies (ANCAs)

A

Microscopic polyangiitis and Churg-Strauss syndrome
(MPO-ANCA/p-ANCA); granulomatosis with polyangiitis
(Wegener; PR3-ANCA/c-ANCA)

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8
Q

Antinuclear antibodies (ANAs: anti-Smith and anti-dsDNA)

A

SLE (type III hypersensitivity)

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9
Q

Antiplatelet antibodies

A

Idiopathic thrombocytopenic purpura

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10
Q

Anti-topoisomerase antibodies

A

Diffuse systemic scleroderma

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11
Q

Anti-transglutaminase/anti-gliadin/anti-endomysial

antibodies

A

Celiac disease (diarrhea, distention, weight loss)

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12
Q

“Apple core” lesion on abdominal x-ray

A

Colorectal cancer (usually left-sided)

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13
Q

Azurophilic peroxidase, positive granular inclusions in granulocytes and myeloblasts

A

Auer rods (AML, especially the promyelocytic [M3] type)

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14
Q

Bacitracin response

A 
Sensitive: Streptococcus pyogenes (group A); resistant: 
Streptococcus agalactiae (group B)
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15
Q

“Bamboo spine” on x-ray

A

Ankylosing spondylitis (chronic inflammatory arthritis: HLA-B27)

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16
Q

Basophilic nuclear remnants in RBCs

A

Howell-Jolly bodies (due to splenectomy or nonfunctional spleen)

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17
Q

Basophilic stippling of RBCs

A

Lead poisoning or sideroblastic anemia

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18
Q

Bloody tap on LP

A

Subarachnoid hemorrhage

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19
Q

“Boot-shaped” heart on x-ray

A

Tetralogy of Fallot, RVH

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20
Q

Branching gram-positive rods with sulfur granules

A

Actinomyces israelii

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21
Q

Bronchogenic apical lung tumor on imaging

A 
Pancoast tumor (can compress sympathetic ganglion and 
cause Horner syndrome)
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22
Q

“Brown” tumor of bone

A

Hyperparathyroidism or osteitis fibrosa cystica (deposited hemosiderin from hemorrhage gives brown color)

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23
Q

Cardiomegaly with apical atrophy

A

Chagas disease (Trypanosoma cruzi)

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24
Q

Cellular crescents in Bowman capsule

A

Rapidly progressive crescentic glomerulonephritis

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25
Q

“Chocolate cyst” of ovary

A

Endometriosis (frequently involves both ovaries)

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26
Q

Circular grouping of dark tumor cells surrounding pale

neurofibrils

A

Homer-Wright rosettes (neuroblastoma, medulloblastoma, retinoblastoma)

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27
Q

Colonies of mucoid Pseudomonas in lungs

A

Cystic fibrosis (autosomal recessive mutation in CFTR gene –> fat-soluble vitamin deficiency and mucous plugs)

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28
Q

Decreased AFP in amniotic fluid/maternal serum

A

Down syndrome or other chromosomal abnormality

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29
Q

Degeneration of dorsal column nerves

A

Tabes dorsalis (3° syphilis), subacute combined degeneration (dorsal columns and lateral corticospinal tracts affected)

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30
Q

Depigmentation of neurons in substantia nigra

A 
Parkinson disease (basal ganglia disorder: rigidity, resting 
tremor, bradykinesia)
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31
Q

Desquamated epithelium casts in sputum

A 
Curschmann spirals (bronchial asthma; can result in whorled 
mucous plugs)
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32
Q

Disarrayed granulosa cells in eosinophilic fluid

A

Call-Exner bodies (granulosa-theca cell tumor of the ovary)

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33
Q

Dysplastic squamous cervical cells with nuclear enlargement and hyperchromasia

A

Koilocytes (HPV: predisposes to cervical cancer)

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34
Q

Enlarged cells with intranuclear inclusion bodies

A

“Owl eye” appearance of CMV

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35
Q

Enlarged thyroid cells with ground-glass nuclei

A

“Orphan Annie” eyes nuclei (papillary carcinoma of the

thyroid)

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36
Q

Eosinophilic cytoplasmic inclusion in liver cell

A

Mallory body (alcoholic liver disease)

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37
Q

Eosinophilic cytoplasmic inclusion in nerve cell

A

Lewy body (Parkinson disease)

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38
Q

Eosinophilic globule in liver

A

Councilman body (toxic or viral hepatitis, often yellow fever)

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39
Q

Eosinophilic inclusion bodies in cytoplasm of hippocampal and cerebellar nerve cells

A

Negri bodies of rabies

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40
Q

Extracellular amyloid deposition in gray matter of brain

A

Senile plaques (Alzheimer disease)

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41
Q

Giant B cells with bilobed nuclei with prominent inclusions (“owl’s eye”)

A

Reed-Sternberg cells (Hodgkin lymphoma)

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42
Q

Glomerulus-like structure surrounding vessel in germ cells

A

Schiller-Duval bodies (yolk sac tumor)

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43
Q

“Hair on end” (crew-cut) appearance on x-ray

A

β-thalassemia, sickle cell anemia (marrow expansion)

44
Q

hCG elevated

A

Choriocarcinoma, hydatidiform mole (occurs with and

without embryo, and multiple pregnancy)

45
Q

Heart nodules (granulomatous)

A

Aschoff bodies (rheumatic fever)

46
Q

Heterophile antibodies

A

Infectious mononucleosis (EBV)

47
Q

Hexagonal, double-pointed, needle-like crystals in bronchial secretions

A 
Bronchial asthma (Charcot-Leyden crystals: eosinophilic 
granules)
48
Q

High level of D-dimers

A

DVT, PE, DIC

49
Q

Hilar lymphadenopathy, peripheral granulomatous lesion in middle or lower lung lobes (can calcify)

A

Ghon complex (1° TB: Mycobacterium bacilli)

50
Q

“Honeycomb lung” on x-ray or CT

A

Interstitial pulmonary fibrosis

51
Q

Hypercoagulability (leading to migrating DVTs and vasculitis)

A

Trousseau syndrome (adenocarcinoma of pancreas or lung)

52
Q

Hypersegmented neutrophils

A

Megaloblastic anemia (B 12 deficiency: neurologic symptoms; folate deficiency: no neurologic symptoms)

53
Q

Hypertension, hypokalemia, metabolic alkalosis

A

Conn syndrome

54
Q

Hypochromic, microcytic anemia

A

Iron deficiency anemia, lead poisoning, thalassemia (fetal hemoglobin sometimes present)

55
Q

Increased AFP in amniotic fluid/maternal serum

A

Dating error, anencephaly, spina bifida (neural tube defects)

56
Q

Increased uric acid levels

A

Gout, Lesch-Nyhan syndrome, tumor lysis syndrome, loop and thiazide diuretics

57
Q

Intranuclear eosinophilic droplet-like bodies

A

Cowdry type A bodies (HSV or CMV)

58
Q

Iron-containing nodules in alveolar septum

A

Ferruginous bodies (asbestosis: increased chance of mesothelioma)

59
Q

Keratin pearls on a skin biopsy

A

Squamous cell carcinoma

60
Q

Large lysosomal vesicles in phagocytes, immunodeficiency

A

Chédiak-Higashi disease (congenital failure of phagolysosome formation)

61
Q

“Lead pipe” appearance of colon on barium enema x-ray

A

Ulcerative colitis (loss of haustra)

62
Q

Linear appearance of IgG deposition on glomerular basement membrane

A

Goodpasture syndrome

63
Q

Low serum ceruloplasmin

A

Wilson disease (hepatolenticular degeneration)

64
Q

“Lumpy bumpy” appearance of glomeruli on

immunofluorescence

A

Poststreptococcal glomerulonephritis (immune complex deposition of IgG and C3b)

65
Q

Lytic (“hole punched”) bone lesions on x-ray

A

Multiple myeloma

66
Q

Mammary gland (“blue domed”) cyst

A

Fibrocystic change of the breast

67
Q

Monoclonal antibody spike (4)

A
  1. Multiple myeloma (usually IgG or IgA)
  2. Monoclonal gammopathy of undetermined significance (MGUS consequence of aging)
  3. Waldenström (M protein = IgM) macroglobulinemia
  4. Primary amyloidosis
68
Q

Mucin-filled cell with peripheral nucleus

A

“Signet ring” (gastric carcinoma)

69
Q

Narrowing of bowel lumen on barium x-ray

A

“String sign” (Crohn disease)

70
Q 
Necrotizing vasculitis (lungs) and necrotizing 
glomerulonephritis
A

Granulomatosis with polyangiitis (Wegener; PR3-ANCA/
c-ANCA) and Goodpasture syndrome (anti–basement
membrane antibodies)

71
Q

Needle-shaped, negatively birefringent crystals

A

Gout (monosodium urate crystals)

72
Q

Nodular hyaline deposits in glomeruli

A

Kimmelstiel-Wilson nodules (diabetic nephropathy)

73
Q

Novobiocin response

A

Sensitive: Staphylococcus epidermidis

resistant: Staphylococcus saprophyticus

74
Q

“Nutmeg” appearance of liver

A

Chronic passive congestion of liver due to right heart failure

75
Q

“Onion skin” periosteal reaction

A

Ewing sarcoma (malignant round-cell tumor)

76
Q

Optochin response

A

Sensitive: Streptococcus pneumoniae

resistant: viridans streptococci

77
Q

Periosteum raised from bone, creating triangular area

A

Codman triangle on x-ray (osteosarcoma, Ewing sarcoma, pyogenic osteomyelitis)

78
Q

Podocyte fusion or “effacement” on electron microscopy

A

Minimal change disease (child with nephrotic syndrome)

79
Q

Polished, “ivory-like” appearance of bone at cartilage erosion

A

Eburnation (osteoarthritis resulting in bony sclerosis)

80
Q

Protein aggregates in neurons from hyperphosphorylation of tau protein

A

Neurofibrillary tangles (Alzheimer disease) and Pick bodies

Pick disease

81
Q

Psammoma bodies

A

Meningiomas, papillary thyroid carcinoma, mesothelioma, papillary serous carcinoma of the endometrium and ovary

82
Q

Pseudopalisading tumor cells on brain biopsy

A

Glioblastoma multiforme

83
Q

RBC casts in urine

A

Acute glomerulonephritis

84
Q

Rectangular, crystal-like, cytoplasmic inclusions in Leydig cells

A

Reinke crystals (Leydig cell tumor)

85
Q

Renal epithelial casts in urine

A

Acute toxic/viral renal injury

86
Q

Rhomboid crystals, positively birefringent

A

Pseudogout (calcium pyrophosphate dihydrate crystals)

87
Q

Rib notching

A

Coarctation of the aorta

88
Q

Ring-enhancing brain lesion in AIDS

A

Toxoplasma gondii, CNS lymphoma

89
Q

Sheets of medium-sized lymphoid cells with scattered pale, tingible body–laden macrophages (“starry sky” histology)

A

Burkitt lymphoma (t[8:14] c-myc activation, associated with EBV; “black sky” made up of malignant cells)

90
Q

Silver-staining spherical aggregation of tau proteins in

neurons

A

Pick bodies (Pick disease: progressive dementia, changes in personality)

91
Q

“Soap bubble” in femur or tibia on x-ray

A

Giant cell tumor of bone (generally benign)

92
Q

“Spikes” on basement membrane, “dome-like” subepithelial deposits

A

Membranous glomerulonephritis (may progress to nephrotic syndrome)

93
Q

Stacks of RBCs

A

Rouleaux formation (high ESR, multiple myeloma)

94
Q

Stippled vaginal epithelial cells

A

“Clue cells” (Gardnerella vaginalis)

95
Q

“Tennis racket”-shaped cytoplasmic organelles (EM) in Langerhans cells

A

Birbeck granules (Langerhans cell histiocytosis or histiocytosis X: eosinophilic granuloma)

96
Q

Thrombi made of white/red layers

A

Lines of Zahn (arterial thrombus, layers of platelets/RBCs)

97
Q

“Thumb sign” on lateral x-ray

A

Epiglottitis (Haemophilus influenzae)

98
Q

Thyroid-like appearance of kidney

A

Chronic bacterial pyelonephritis

99
Q

“Tram-track” appearance of capillary loops of glomerular basement membranes on light microscopy

A

Membranoproliferative glomerulonephritis

100
Q

Triglyceride accumulation in liver cell vacuoles

A

Fatty liver disease (alcoholic or metabolic syndrome)

101
Q

“Waxy” casts with very low urine flow

A

Chronic end-stage renal disease

102
Q

WBC casts in urine

A

Acute pyelonephritis

103
Q

WBCs that look “smudged”

A

CLL (almost always B cell)

104
Q

“Wire loop” glomerular capillary appearance on light

microscopy

A

Lupus nephropathy

105
Q

Yellowish CSF

A

Xanthochromia (e.g., due to subarachnoid hemorrhage)

Rapid Review Notecards (8 decks)

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