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: LYMPHATIC: Mediastinal lymph nodes: Metastatic Carcinoma: Gross fixed tissue frontal section through trachea showing grossly enlarged mediastinal nodes with necrosis and anthracotic pigment small cell carcinoma of lung