卵巢畸胎瘤是卵巢生殖细胞肿瘤的一类,由多胚层组织构成,由于畸胎瘤组成成分复杂,内部常包含神经组织,当肿瘤细胞诱发机体产生特异性抗体时,机体内部拥有相同抗原决定簇的正常神经组织也可能收到抗体攻击,从而诱发一系列神经系统症状,称为神经系统副肿瘤综合征(PNS)~([1])。抗N-甲基-D-天冬氨酸受体(NMDAR)脑炎便是相关的一种疾病。本文报道2例我院收治的卵巢畸胎瘤合并 Ovarian teratoma is a type of ovarian germ cell tumors, composed of the tissue of the embryonic germ layer, the teratoma composition is complex, usually contains internal nervous tissue, when tumor cells induce specific antibodies produced by the body, the body has the same antigenic determinants Clusters of normal nervous tissue may also receive antibody attack, which induced a series of neurological symptoms, called the paraneoplastic syndrome of the nervous system (PNS) ~ ([1]). Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is a related disease. This article reports 2 cases of ovarian teratoma admitted to our hospital