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Anastomosis

Definition

An anastomosis is a surgical connection between two structures. It usually means a connection that is created between tubular structures, such as blood vessels or loops of intestine.

For example, when part of an intestine is surgically removed, the two remaining ends are sewn or stapled together (anastomosed), and the procedure is referred to as an intestinal anastomosis.

Alternative Names

Information

Examples of surgical anastomoses are colostomy (an opening created between the bowel and the abdominal skin) and arterio-venous fistula (an opening created between an artery and vein) for hemodialysis.

A pathological (caused by disease) anastomosis can result from trauma or infection and may involve veins, arteries, or intestines. These are usually referred to as fistulas.

Traumatic fistulas usually occur between an artery and vein. Traumatic intestinal fistulas usually occur in two ways:

  • Between two loops of intestine (enteroenteric fistula)
  • Between intestine and skin (enterocutaneous fistula)

References

Townsend CM, Beauchamp RD, Evers BM, Mattox KL. Sabiston Textbook of Surgery, 17th ed. St. Louis, MO: WB Saunders; 2004: 1439-1464.

Feldman M, Friedman LS, Sleisenger MH, eds. Sleisenger & Fordtran’s Gastrointestinal and Liver Disease. 7th ed. Philadelphia, PA: WB Saunders; 2002:2075.

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      Review Date: 8/8/2009

      Review By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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