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Pathology · Inflammation: leukocyte defect
Sample itemA child has delayed separation of the umbilical cord, recurrent bacterial infections without pus, and persistent neutrophilia. What defect is likely?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Leukocyte adhesion deficiency
Leukocyte adhesion deficiency impairs integrin-mediated neutrophil adhesion and transmigration, causing delayed cord separation, absent pus, recurrent infections, and neutrophilia in blood.
Option by option
A. Leukocyte adhesion deficiency (correct)
Correct. Failed neutrophil extravasation produces this classic pattern.
B. Chronic granulomatous disease
CGD causes defective respiratory burst and catalase-positive infections.
C. Complement C1 esterase deficiency
C1 esterase deficiency causes hereditary angioedema.
D. Chediak-Higashi syndrome
Chediak-Higashi causes lysosomal trafficking defect with albinism and neuropathy.
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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