钙化上皮瘤(calcifying epithelioma)或称毛母质瘤(pilomatrixoma),临床上比较少见,误诊率高。我院1978～1987年经病理检查证实的36例,误诊33例。临床资料 36例钙化上皮瘤中临床误诊33例,占92％,其中拟皮脂腺囊肿或表皮样囊肿者22例,慢性淋巴结炎4例,皮肤纤维瘤5例,黑色素瘤1例,血管瘤l例。一、性别、年龄男女之比为1:1.75。年龄7～70岁,以11～30岁多见(21例,占64％),患病年龄高峰11～20岁(16例)。二、病期最短45天,最长20年,半年以下者11例,0.5 Calcinifying epithelioma or pilomatrixoma is rare in clinical practice and has a high rate of misdiagnosis. In our hospital from 1978 to 1987, 36 cases were confirmed by pathological examination and 33 cases were misdiagnosed. Clinical data 36 cases of calcified epithelioma were clinically misdiagnosed in 33 cases, accounting for 92%, of which 22 cases were treated with sebaceous cysts or epidermoid cysts, 4 cases with chronic lymphadenitis, 5 cases with dermatofibroma, 1 case with melanoma, and 1 case with hemangiomas. . First, the ratio of males and females to males and females is 1:1.75. The age ranged from 7 to 70 years old, with the majority being 11 to 30 years old (21 cases, 64%). The age of the disease was 11 to 20 years old (16 cases). Second, the shortest period of 45 days, up to 20 years, 11 cases of half a year, 0.5