[Retroperitoneal malignant T-cell lymphoma--a case report].
D006801:Humans; D008223:Lymphoma / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013601:T-Lymphocytes / Q000473:pathology