title: Asymptomatic sacral agenesis with crossed renal ectopia.
mesh_terms: D000015:Abnormalities, Multiple; D002675:Child, Preschool; D006801:Humans; D007668:Kidney / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008297:Male; D011859:Radiography; D012447:Sacrum / Q000002:abnormalities* / Q000000981:diagnostic imaging