1. Case of deficiency of the anterior part of the sacrum with a thecal sac in the pelvis, similar to the tumor of spina bifida;Bryant;Lancet,1837
2. Anterior sacral meningocele presenting as constipation;Mohta;J Pediatr Neurosci,2011
3. Triad of anorectal, sacral and presacral anomalies;Currarino;Am J Roentgenol,1981
4. Scimitar sacrum;Alappat;Neurol India,2004
5. Tumors of the retrorectal space;Hobson;Dis Colon Rectum,2005