恶性纤维组织细胞瘤是一种常见的发生在老年人的软组织肉瘤。国内外均有较多报道,但发生在头颈部的报道尚少。现将我科遇见1例发生在拔牙伤口的,报道如下:患者蔡×,67岁,男,农民。诉:于8个月前因(?)龋牙,在当地拔除,但伤口一直不愈(1个洞),近月来见伤口旁牙龈长一肿物,为棕色,自认为“血肿”常用针刺穿“放血”,因肿物不痛不痒,且逐渐 Malignant fibrous histiocytoma is a common soft tissue sarcoma that occurs in the elderly. There are many reports at home and abroad, but there are few reports on the head and neck. One case in our department met with a tooth extraction wound. The report is as follows: Patient Cai X, 67 years old, male, farmer. V.: 8 months ago because of (?) tooth decay, removed in the area, but the wound has been healed (1 hole), in recent months to see the wound next to the gum, a tumor, brown, self-conceptual “hematoma” commonly used The needle pierces the “bleed” because the mass is not itchy, and gradually