Histologically, a prominent feature are their perivascular pseudorosettes, which are ring-like structures formed by tumors cells with rod-shaped ependymal processes, like cilia, surrounding a centralized blood vessel.

从组织学上看，主要特征是假菊形团，室膜瘤棒状突起（如纤毛）形成环状结构，围绕着中央。