title: [Primary retroperitoneal neoplasms].
mesh_terms: D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008067:Lipoma / Q000601:surgery; D008297:Male; D009236:Myxosarcoma / Q000601:surgery; D012186:Retroperitoneal Neoplasms / Q000601:surgery*; D012737:Sex Factors; D013724:Teratoma / Q000601:surgery
vernacular_title: Primárne retroperitoneálne novotvary.