Black Grain Mycetoma

Abstract

A 46-year-old truck driver developed a mycetoma of the left foot after a nail puncture. Soft black granules, 0.5 to 2 mm in diameter, were present in the exudate from draining sinuses as well a in histological sections. Cultural studies led to the identification of the etiologic agent as<i>Madurella grisea</i>. Administration of amphotericin B intravenously failed to control the disease. The mycetoma was ultimately opened, and the superficial sinus tracts were cored out surgically.