A case of a young woman with Bednar tumor

Abstract

The case was a 22-year-old woman who noticed a subcutaneous tumor in her right chest seven years ago. After an excisional specimen revealed the features of Bednar tumor, the lesion was excised with a wide margin. A histological examination of the tumor showed spindle cells arranged in a storiform pattern and dendritic cells with melanin in the spindle cells. Fifty-six cases of Bednar tumor have been reported in Japan, including our case, between 1975 and 2006. We also studied them comparing them to 151 cases of dermatofibrosarcoma protuberans in Japan. [Skin Cancer (Japan) 2006; 21: 302-305]