Primary malignant retroperitoneal tumors.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000970:Antineoplastic Agents / Q000627:therapeutic use; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D011379:Prognosis; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis* / Q000453:epidemiology* / Q000532:radiotherapy / Q000601:surgery
D000970:Antineoplastic Agents