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A fistula (plural: fistulae) is an abnormal connection between two epithelial surfaces such as between hollow organs, skin or vessels. Conventionally, the name of a specific fistula type is a combination of the two organs

For discussions of specific fistulae please refer to individual articles.



A wide variety of etiologies are implicated:


Various types of fistula have been described:

History and etymology

From the Latin, fistula means tube or pipe 1.

Terms used in radiology

Article information

rID: 63975
Section: Pathology
Synonyms or Alternate Spellings:
  • Fistulae

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