[RETROPERITONEAL LIPOMA. SARCOMATOUS TRANSFORMATION].
D006801:Humans; D008067:Lipoma; D009369:Neoplasms; D012186:Retroperitoneal Neoplasms; D012509:Sarcoma
LIPOMA; RETROPERITONEAL NEOPLASMS; SARCOMA
LIPOME R'ETROP'ERITON'EAL. TRANSFORMATION SARCOMATEUSE.