A functional colonic obstruction: Cannon's point.

Academic Article


  • A patient presented with a large bowel obstruction after laparoscopic hernia repair converted to open inguinal hernia repair. A contrast enema examination revealed an area of narrowing in the midtransverse colon, consistent with Cannon's point. This represents a physiologic sphincter with focal narrowing of the colon lumen.
  • Authors

    Published In


  • CT, computed tomography
  • Digital Object Identifier (doi)

    Author List

  • McKnight ST; Myers A; Canon CL; Hawn M
  • Start Page

  • 557
  • Volume

  • 6
  • Issue

  • 4