Congenital tumor

Congenital tumors can be divided into craniopharyngiomas, epithelioid tumors, and germ cell tumors, of which craniopharyngiomas are the most common congenital intracranial tumors. According to the location and histological characteristics of the tumor, there were many different names, such as upper saddle cyst, epithelioma, epithelial cyst, squamous epithelioma, enamel tumor, pituitary enamel tumor, and so on. Epithelial tumors and dermoid tumors (dermatoid cysts) originate from embryonic epitheliomas that remain in the skull. Epithelial tumors contain only ectoderm components, dermoid tumors contain two germ layers of ectoderm and mesoderm, and teratomas contain three germ layers. Dermatoid tumors and teratomas are rare. Germ cell tumors are also known as atypical teratomas, and were previously known as pineal tumors. Tumors arise from embryonic cells, not pineal parenchymal cells.

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