脑膜瘤的组织学特点已有深入研究,但对脑膜瘤与脑的界面研究较少,脑膜瘤常侵及脑膜与颅骨,却很少侵及脑。本文探讨了脑膜瘤与其周围脑组织及蛛网膜下腔血管的关系。作者从1950～1982年间的272例脑膜瘤尸检材料中选27例符合以下条件者用于研究:1.未手术,2.脑膜瘤与脑相连,3.标本同时保留了脑膜瘤和脑组织。肿瘤平均直径从尸检记录或标本切片上测得。27例中3例生前有症状,余均为尸检时发现。仅一例浸润型见核染色质增多,余均为良性脑膜瘤。另外还包括3例手术切除的标本。瘤脑界面分四型:1.光滑型,界面相对平坦,2.小叶型,有结节,界面 The histological features of meningiomas have been studied in depth, but the interface between meningioma and brain is less studied. Meningiomas often invade the meninges and skulls but rarely invade the brain. This article discusses the relationship between meningioma and its surrounding brain tissue and subarachnoid vessels. From 272 cases of meningioma autopsy materials from 1950 to 1982, the authors selected 27 cases that meet the following conditions for the study: 1. No surgery, 2. Meningioma is connected to the brain, 3. The specimen also retained meningioma and brain tissue. The average diameter of the tumor was measured from autopsy records or specimen sections. Three of the 27 cases had symptoms before their lifetime, and the rest were found during autopsy. Only one case of infiltrative nuclear chromatin increased and the rest were benign meningiomas. It also included 3 surgical specimens. The tumor brain interface is divided into four types: 1. smooth type, relatively flat interface, 2. lobular type, nodules, interface