在卵巢畸胎瘤中常见有复杂的分化不等数量不一的神经外胚叶成分,其成熟者有交感神经节细胞丛、有或无髓鞘神经纤维束、脑皮质、室管膜、乳头状脉络丛乃至视网膜内具有黑色素沉着的内界膜等。上述组织能形成与其相应的良或恶性肿瘤样结构,大多发生于未成熟性畸胎瘤内。近年来国外有文献报告完全或近于完全幼稚神经外胚叶成 Common in the ovarian teratoma are complicated with varying degrees of differentiation of neuroectodermal components, the maturity of sympathetic ganglion cells, with or without myelinated nerve fiber bundle, cerebral cortex, ependymal, nipple Like choroid plexus and even the retina with melanin inner membrane and so on. The above tissues can form their corresponding benign or malignant tumor-like structures, mostly in immature teratoma. In recent years, foreign literature reports complete or near complete naive neuroectodermal