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Orthopaedics · Bone tumours: biopsy principles
Sample itemWhich principle applies when planning a biopsy of a suspected primary bone sarcoma?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Biopsy should be done by the treating surgeon team with a longitudinal incision so that the tract can be excised later
Imaging should precede biopsy, and the biopsy should be planned with the definitive surgery by the sarcoma team. A longitudinal incision placed so that the tract can be excised en bloc avoids contaminating compartments and compromising limb salvage.
Option by option
A. Biopsy should be done by the treating surgeon team with a longitudinal incision so that the tract can be excised later (correct)
Correct. The tract must be excisable with the definitive specimen.
B. Perform a transverse incision at the most convenient site
Transverse incisions contaminate wider tissue and complicate resection.
C. Biopsy at a centre unrelated to the definitive treatment centre
Biopsy at an unrelated centre risks a poorly placed tract.
D. Open biopsy before any imaging
Imaging must precede biopsy because biopsy changes imaging appearance.
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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