Postauricular primary dermatofibrosarcoma protuberans: a case report / 临床耳鼻咽喉头颈外科杂志

Dermatofibrosarcoma protuberan is a maligant tumor with low malignancy. The major clinical manifestation is a hard nodule increasing slowly from skin surface, pale purple. Pathological feature as a wheel shape or a multilayer aligned fibroblast.