Classic Labs/Findings IV Flashcards

1
Q

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

A

Giant cell tumor of bone (generally benign)

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2
Q

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

A

Membranous nephropathy (nephrotic syndrome)

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3
Q

Stacks of RBCs

A

Rouleaux formation (High ESR, multiple myeloma)

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4
Q

Steeple sign on CXR

A

Croup (parainfluenza virus)

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5
Q

Stippled vaginal epithelial cells

A

“Clue cells” (Gardnerella aginalis)

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6
Q

Streptococcus bovis bacteremia

A

Colon cancer

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7
Q

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

A

Birbeck granules (Langerhans cell hystiocytosis)

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8
Q

Thousands of polyps on coonoscopy

A

Familial adenomatous polyposis (Autosomal dominant, mutation of APC gene)

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9
Q

Thrombi made of white/red layers

A

Lines of Zahn (arterial thrombus, layers of platelets/RBC’s)

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10
Q

“Thumb sign” on lateral neck x-ray

A

Epiglottitis (Haemophilus influenzae)

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11
Q

Thyroid-like appearance of kidney

A

Chronic pyelonephritis (Usually due to recurrent infections)

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12
Q

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

A

Membranoproliferative glomerulonephritis

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13
Q

Triglyceride accumulation in liver cell vacuoles

A

Fatty liver disease (alcoholic or metabolic syndrome)

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14
Q

Waxy casts with very low urine flow

A

Chronic end-stage renal disease

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15
Q

WBC casts in urine

A

Acute pyelonephritis

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16
Q

WBC’s that look “smudged”

A

CLL (almost alway sB cell)

17
Q

“Wire loop” glomerular capillary appearance on light microscopy

A

Diffuse proliferative glomerulonephritis (usually seen with lupus)

18
Q

Yellowish CSF

A

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