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: GASTROINTESTINAL: Esophagus: Squamous Cell Carcinoma: Gross fixed tissue another view of the tumor seen in cross section of trachea esophagus and lungs an unusual view that shows very clearly the extent of spread of the tumor in mediastinal tissue good example of why surgery is not effective