title: [Report on 2 highly-mature, retroperitoneally located, twin teratomas in a male newborn infant: fetus in fetu].
mesh_terms: D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000000981:diagnostic imaging*; D008297:Male; D011859:Radiography; D012186:Retroperitoneal Neoplasms / Q000151:congenital* / Q000000981:diagnostic imaging; D013724:Teratoma / Q000151:congenital* / Q000000981:diagnostic imaging
vernacular_title: Bericht über zwei retroperitoneal gelegene Zwillingsteratome hohen Reifungsgrades in einem männlichen Neugeborenen: Fetus in fetu.