颅内畸胎瘤属罕见肿瘤，作者诊治1例，报告如下。病例报告患者男，14岁，因左上下肢逐渐无力、变细2年余，加重伴头痛、呕吐1个月入院。两年前CT扫描见“右侧苍白球钙化”，病灶1．2cmX1．0cmX2．0cm，予“对症治疗”无效。入院检查：体毛多，视乳头水肿，左上下肢肌力3级，肌 Intracranial teratoma is a rare tumor. The author diagnosed and treated 1 case. The report is as follows. Case report The patient was male, 14 years old. He suffered from headache and vomiting for 1 month after left and right lower limbs became weaker and thinner for more than 2 years. Two years ago, the CT scan showed “calcification of the right globus pallidus.” The lesion was 1.2cmX1.0cmX2.0cm and was not effective for “symptomatic treatment.” Admission examination: body hair, papilledema, left upper and lower limb muscle strength 3, muscle