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A retroperitoneal mass in an elderly woman. Pleomorphic rhabdomyosarcoma, classic variant, with reactive osteoclast-like giant cells.

A retroperitoneal mass in an elderly woman. Pleomorphic rhabdomyosarcoma, classic variant, with reactive osteoclast-like giant cells. Arch Pathol Lab Med. 2005 May; 129(5):703-5.

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