卵巢支持一间细胞瘤多发生于20～30岁,占卵巢肿瘤0.2%,本文报告一例为5岁女孩,表现性早熟和男性化征,是日本报告22例中年龄最小的。病例报告 1985年4月2日出现尿频、夜尿和阴道流血,4月8日发现乳房增大,从5月10日腹部膨满及出现阴毛,为明确诊断于5月24日入院。查体:身高110.5cm,体重21.3kg,体格中等,全身皮肤多 Ovarian support of a cell tumor occurs in 20 to 30 years of age, accounting for 0.2% of ovarian tumors. This article reports a case of 5-year-old girl, precocious puberty and masculinity, is the youngest of 22 cases reported in Japan. Case report On April 2, 1985, urinary frequency, nocturia, and vaginal bleeding occurred. On April 8, the enlarged breasts were found. From May 10, the abdomen was swollen and pubic hair appeared. The diagnosis was confirmed on May 24th. Physical examination: height 110.5cm, weight 21.3kg, medium body, full body skin