CD34-positive myxoid sarcoma of the retroperitoneum: a dilemma in differential diagnosis of multiple biopsy specimens.

Abstract excerpt

The author reports a case of CD34-positive malignant myxoid sarcoma in the retroperitoneum with a dilemma of differential diagnosis in multiple biopsy specimens of different locations. A 79-year-old man was diagnosed with right renal pelvic carcinoma and nephrectomy was performed. The carcinoma was urothelial carcinoma (2 cm in diameter) without invasion. The patient was followed up, and a large retroperitoneal...

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