I.02 Subependymoma

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PI.02.a1 Subependymoma (MT x16). Tumor composed of small cells with a regular nucleus, forming small chains and islands disseminated throughout an abundant fibrillary framework, spongy in certain areas. The vessels may be of large caliber and their wall is sometimes very fibrous. Several calcifications are visible. A subependymoma is grossly visible in a brain section (IV.01.g1) that also contains a glioblastoma.