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Orthopaedics · Foot infections: mycetoma
Sample itemA farmer walks barefoot and has a painless swollen foot with multiple discharging sinuses releasing granules. Which diagnosis fits?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Madura foot (mycetoma)
Mycetoma is a chronic granulomatous infection by fungi (eumycetoma) or actinomycetes (actinomycetoma) after implantation through a thorn prick, with swelling, sinuses and grains. Bone destruction and a dot-in-circle sign on MRI may be seen.
Option by option
A. Plantar fibromatosis
Plantar fibromatosis causes nodules without sinuses.
B. Madura foot (mycetoma) (correct)
Correct. Swelling, sinuses and grains describe Madura foot.
C. Diabetic ulcer
Diabetic ulcers are not associated with grain discharge.
D. Charcot foot
Charcot foot is neuropathic joint destruction without grains.
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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