A variation of the sacrum on the lateral view.
D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000002:abnormalities*; D008297:Male; D008588:Meningocele / Q000000981:diagnostic imaging*; D008875:Middle Aged; D012447:Sacrum / Q000002:abnormalities / Q000000981:diagnostic imaging*; D014056:Tomography, X-Ray