Mycetoma sans sinuses.

Mycetoma is a chronic suppurative infection involving the skin, subcutaneous tissue and bone. The hallmark of mycetoma is tumefaction, draining sinuses and the presence of microcolonies called grains. Sinuses develop in all patients with mycetoma within a year of the appearance of the lesion. The following case is reported as no sinuses had developed despite the presence of the lesion for 9 years, posing a diagnostic dilemma.