畸胎瘤是来源于胚胎多胚层组织的肿瘤,好发部位为身体中线及其两旁,最多见卵巢和睾丸,发生于耳部者较少见,笔者遇到1例,报告如下。患者,女,20岁。自出生后发现左侧耳后有一无痛性肿物,无不适,随着年龄增长,肿物逐渐增大,无痛,时有头痛,无发热,无感染,也无溃烂。于2001年6月20日 Teratoma is derived from the embryonic tissue of the embryonic germ tumors, the site of predilection for the body midline and its sides, the most common ovary and testis, occurred in the ear were rare, I encountered 1 case, the report is as follows. Patient, female, 20 years old. Since birth, there is a painless mass in the left ear. No discomfort. With age, the mass gradually increases, painless, headache, no fever, no infection and no ulceration. On June 20, 2001