畸胎瘤是多能性胚胎组织起源的一类非常特殊的肿瘤,大多含有三胚层起源的多种多样的组织。主要发生于性腺,尤其卵巢多见。其次为前纵隔、骶尾部和后腹膜。偶见于颅底、松果体及椎管内等处。发生在小肠者极罕见,我院曾遇一例。患者女,53岁,已婚,病案号70174。腹部活 Teratomas are a very special class of tumors of pluripotent embryonic origin, most of which contain a variety of tissues of three germline origin. Occur mainly in the gonads, especially in the ovary. Followed by the anterior mediastinum, sacrococcygeal and posterior peritoneum. Occasionally in the skull base, pineal gland and spinal canal and so on. Occurrence in the small intestine is extremely rare, and our hospital encountered one case. The female patient is 53 years old and is married. Case number 70174. Live belly