Question:
A patient presents with irregular swelling over the foot, multiple discharging sinuses, and black granules. A KOH mount is performed on the discharge. What is the most likely observation?
A patient presents with irregular swelling over the foot, multiple discharging sinuses, and black granules. A KOH mount is performed on the discharge. What is the most likely observation?
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Mycetoma triad = swelling, sinus tracts and grains. Black grains commonly suggest fungal cause.
Updated On: May 14, 2026
- Arthrospores
- Slender dematiaceous fungi
- Yeast
- Septate hyphae
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The Correct Option is D
Solution and Explanation
Concept:
Multiple discharging sinuses with grains from the foot suggest mycetoma. Black granules often point toward eumycetoma, which shows fungal hyphae.
Step 1: Identify clinical condition.
The triad is: \[ \text{Swelling + sinuses + granules} \] This suggests mycetoma.
Step 2: Interpret black granules.
Black granules suggest fungal mycetoma.
Step 3: KOH finding.
Fungal mycetoma shows: \[ \text{Septate hyphae} \]
Step 1: Identify clinical condition.
The triad is: \[ \text{Swelling + sinuses + granules} \] This suggests mycetoma.
Step 2: Interpret black granules.
Black granules suggest fungal mycetoma.
Step 3: KOH finding.
Fungal mycetoma shows: \[ \text{Septate hyphae} \]
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