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: Urinary: Kidney: Chronic Pyelonephritis: Gross natural color opened kidney pelvis and ureter with hemorrhagic pyelitis and hydronephrosis said to be infected possibly because of PBH but also history of phenacetin very good example of pyelitis