Sarcoma resembling Burkitt's tumour.
D000368:Aged; D002051:Burkitt Lymphoma / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis*; D012509:Sarcoma / Q000175:diagnosis*