A 71-year-old male farmer from Acapulco, Guerrero, Mexico, was seen at the Centro Dermatológico Pascua, Mexico Federal District, with a light brown, dome-shaped, soft nodule on the dorsum of his left foot (Figure 1). The nodule was 1 cm in diameter and had a central pore. A small fistula with no secretion was present on the arch of the sole of the same foot. The lesion appeared 2 years after the foot was pierced with a thorn.
López-Cepeda LD, Mora-Ruiz S, Padilla-Desgarennes MDC, Ramos-Garibay JA. Small Eumycetic Mycetoma Due to Black Grain. Arch Dermatol. 2005;141(6):793-794. doi:10.1001/archderm.141.6.793