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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RADIOLOGY: MUSCULOSKELETAL: BONES: JOINTS: Bone: Osteosarcoma: X-ray distal femur lateral view lytic and blastic lesion shows large posterior mass with a prominent Codmans triangle and sunburst appearance 12 yo female three month history painful knee outside study case AP view is slide