What is a Fourchette fistula?

A rectovestibular fistula occurs when the colon or rectum deviates anteriorly. This leads to the formation of an abnormal connection between the rectum and the vulval vestibule, immediately posterior to the hymen, so that an ectopic anus opens into the fourchette, or frenulum, of the labia minora.

How are anorectal malformations diagnosed?

Doctors diagnose anorectal malformations with a physical exam and imaging tests. They may also order tests to check for other health problems that are common in children with anorectal malformations.

What is ano vestibular fistula?

A rectovestibular fistula, also referred to simply as a vestibular fistula, is an anorectal congenital disorder where an abnormal connection (fistula) exists between the rectum and the vulval vestibule of the female genitalia.

What is atresia ani in cattle?

This anomaly is a common birth defect in cattle and is often accompanied by other congenital defects of the digestive, urogenital tract (6-9) or other organs (4,5). Based on varying degrees of dysgenesis or agenesis of the rectum and anus, atresia ani in cattle can be categorized into four types (9).

What happens to calves with Atresia coli?

Calves born with atresia coli have a section of their large bowel missing and will die within 2 weeks of birth unless surgical correction is performed. Holstein-Friesian calves are at much greater risk for atresia coli than all other breeds.

How common is atresia ani in dogs?

Atresia ani is uncommonly described in dogs and it is even less frequently reported in cats; the true incidence of this abnormality is difficult to determine and may be greater than. reported because many newborn puppies and kittens are euthanatized before being.

Why are Holstein-Friesian calves at risk for Atresia coli?

NOTICE – This information has been archived and may contain outdated content. Calves born with atresia coli have a section of their large bowel missing and will die within 2 weeks of birth unless surgical correction is performed. Holstein-Friesian calves are at much greater risk for atresia coli than all other breeds.