皮角(Cornucutanem)較少見,一般常发生于头皮及面部。国內曾有发生于頸部、眼瞼、手背、阴茎、腋下等部位的报告,尚未見有发生于乳房皮肤硬、黑褐色,表面粗糙。其基底面积約2.5×2.5厘米。周围皮肤正常,无触痛。 Cornucutanem is less common and usually occurs in the scalp and face. There have been domestic reports of neck, eyelid, back of the hand, penis, underarms, etc. It has not been seen that the skin of the breast is hard, dark brown and the surface is rough. Its base area is about 2.5 x 2.5 cm. The surrounding skin is normal and there is no tenderness.