Medical Definition of Fistula
Fistula: An abnormal passageway in the body. The fistula may go from the body surface into a blindpouch or into an internal organ or go between two internal organs.
There are numerous types of fistulas or (if you like the proper Latin plural) fistula. They are usually designated by the organs or parts they connect (anovaginal, bronchoesophageal, etc.).
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