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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00226719

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ENDOSCOPY: GASTROINTESTINAL: GI: STOMACH: ACHALASIA;STOMACH,CARDIA,RETROFLEXED VIEW; B3RS,NORMAL CARDIA,RETROFLEXED VIEW