Derm Dx: An immigrant with nodules, abscesses and fistulae draining clear viscous exudate on the left foot and ankle

A 27-year old man that immigrated to the United States from a rural part of India presents with several nodules, abscesses, and fistulae draining a clear viscous exudate forming a plaque on his left foot and ankle.

History reveals that the patient had developed a painless subcutaneous nodule on the bottom of his foot years earlier that continued to swell, ...