[Painful nodule on the sole of the foot].

The patient was a 50-year-old waiter with no personal or family history of interest, who was seen for a lesion that was painful on walking. The lesion was on the sole of the right foot, had been present for 8 months, and had not resolved spontaneously. The patient denied any local trauma. He occasionally used nonsteroidal anti-inflammatory drugs for analgesia. On the medial aspect of the middle third of the sole of the right foot there was a faintly palpable, annular, subcutaneous lesion with a diameter of 5 cm and with erythematous patches, some of which were covered by small hemorrhagic scabs (Figure 1). There were no other lesions on examination of the rest of the skin. Histopathology Biopsy of one of the erythematous areas revealed a well-defined area in the middle and deep dermis (Figure 2) with an abundance of eccrine sweat glands of normal morphology and vascular structures with occasional dilatations (Figure 3). W Wh ha at t W Wa as s t th he e D Di ia ag gn no os si is s? ? Figure 1. Documento descargado de http://www.actasdermo.org el 05/04/2017. Copia para uso personal, se prohíbe la transmisión de este documento por cualquier medio o formato.