(fistula) Abnormal passage or communication between two normally unconnected structures, body cavities, or the surface of the body. (Makris S, Solomon HM, Clark R, Shiota K, Barbellion S, Buschmann J, Ema M, Fujiwara M, Grote K, Hazelden KP, Hew KW, Horimoto M, Ooshima Y, Parkinson M, Wise LD. Terminology of developmental abnormalities in common laboratory mammals (Version 2). Part B. Birth Defects Res B Dev Reprod Toxicol. 2009 Aug;86(4):227-327.)

(fistula) Abnormal communication most commonly seen between two internal organs, or between an internal organ and the surface of the body.

(fistula) Abnormal epithelial-lined communication between two anatomical structures.

(fistula) An abnormal opening or passage between two organs or between an organ and the surface of the body. Fistulas may be caused by injury, infection, or inflammation, or may be created during surgery.

(fistulas) A fistula is an abnormal connection between two parts inside of the body. Fistulas may develop between different organs, such as between the esophagus and the windpipe or the bowel and the vagina. They can also develop between two blood vessels, such as between an artery and a vein or between two arteries. Some people are born with a fistula. Other common causes of fistulas include Complications from surgery; Injury; Infection; Diseases, such as Crohn's disease or ulcerative colitis. Treatment depends on the cause of the fistula, where it is, and how bad it is. Some fistulas will close on their own. In some cases, you may need antibiotics and/or surgery.

Fistula, abnormal duct or passageway between organs. Fistulas can form between various parts of the body, including between the uterus and the peritoneal cavity (metroperitoneal, or uteroperitoneal, fistula), between an artery and a vein (arteriovenous fistula), between the bronchi and the pleural...