PEIR Digital Library

Welcome to the Pathology Education Informational Resource (PEIR) Digital Library, a multidisciplinary public access image database for use in medical education.

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GROSS: NERVOUS: Brain: Ependymitis Granular Neoplastic: Gross fixed tissue close-up view of lateral ventricle with well shown granular ependymitis also has meningeal carcinomatosis primary oat cell tumor in lung