Dermatopathology Review: Case #37

Test yourself with this gold-standard dermatopathology case, curated by leading specialists with decades of experience (including our own Rajendra Singh MD). Check the history, scrutinize the interactive WSI with our viewer, and make your diagnosis. Can you get it? Good luck!

Case #37: History

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A 40-year-old man from rural area presents with a several-month history of a slowly enlarging, painless mass on his right foot. He reports occasional drainage of pus and dark granules from small sinus tracts in the area. On examination, there is a swollen, indurated foot with multiple draining sinuses and overlying hyperpigmentation. What is your diagnosis?
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