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Pathology · Infectious pathology: tuberculosis
Sample itemWhich histologic pattern is most typical of tuberculosis?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Caseating granulomas with epithelioid histiocytes and giant cells
Tuberculosis classically causes granulomatous inflammation with central caseous necrosis, epithelioid macrophages, and multinucleated giant cells. Acid-fast stains and cultures help confirm infection.
Option by option
A. Diffuse eosinophilic infiltrate only
Eosinophils dominate allergy and many parasitic infections.
B. Caseating granulomas with epithelioid histiocytes and giant cells (correct)
Correct. Caseating granulomas are the classic tissue reaction.
C. Amyloid deposition
Amyloid is a protein-deposition disorder.
D. Neutrophilic microabscesses only
Neutrophilic abscesses are more typical of pyogenic bacteria.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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