松果体瘤相当少见,Cushing统计占颅内胶质瘤的1.6％。作者在国内文献中只见3例。异位性松果体瘤更为少见,铃木统计约占松果体瘤的10.6％。作者仅自国内文献找到1例。关于异位松果体瘤的组织发生学,意见不一,值得进一步研究。本文报告异位松果体瘤的3例尸检材料,并对其组织形态学及异位瘤的发生学加以探讨。 Pineal tumors are rather rare, Cushing statistics account for 1.6% of intracranial gliomas. The author saw only 3 cases in the domestic literature. Atopic pineal tumors are more rare, Suzuki statistics accounted for about 10.6% of pineal tumors. The author only found one case from domestic literature. Tissue development of ectopic pineal tumors, different views, it is worth further study. This article reports 3 cases of ectopic pineal tumor autopsy material, and its histomorphology and xenograft genesis to be explored.