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: RESPIRATORY: Lung: Metastatic Carcinoma Breast: Gross natural color close-up view of hilum with trachea and bronchi opened showing severe tracheobronchitis and metastatic tumor in mucosa would easily be mistaken for primary bronchial tumor