title: [Case of a benign and malignant extraorganic retroperitoneal tumor].
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000473:pathology*; D012187:Retroperitoneal Space / Q000473:pathology
vernacular_title: Sluchaĭ na dobrokachestven i zlokachestven izvunorganen retroperitonealen tumor.