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A biliary fistula is a type of fistula in which bile flows along an abnormal connection from the bile ducts into a nearby hollow structure. Types of biliary fistula include: bilioenteric fistula: abnormal connection to small bowel, usually duodenum. thoracobiliary fistula: abnormal connection to pleural space or bronchus (rare).
About two percent of fetuses exhibit a type of vitelline fistula characterized by persistence of the proximal part of the vitelline duct as a diverticulum protruding from the small intestine, Meckel's diverticulum, which is typically situated within two feet of the ileocecal junction and may be attached by a fibrous cord to the abdominal wall ...
An oroantral fistula (OAF) is an epithelialized oroantral communication (OAC), which refers to an abnormal connection between the oral cavity and the antrum. [1] The creation of an OAC is most commonly due to the extraction of a maxillary tooth (typically a maxillary first molar ) which is closely related to the antral floor.
A urachal fistula is a congenital disorder caused by the persistence of the allantois (later, urachus), the structure that connects an embryo's bladder to the yolk sac. Normally, the urachus closes off to become the median umbilical ligament ; however, if it remains open, urine can drain from the bladder to an opening by the umbilicus .
In addition to change in shape being a possible side effect from ascites and umbilical hernias, the navel can be involved in umbilical sinus or fistula, which in rare cases can lead to menstrual or fecal discharge from the navel. Menstrual discharge from the umbilicus is a rare disorder associated with umbilical endometriosis. [11]
Umbilical granuloma is the most common umbilical abnormality in newborn children or neonates, causing inflammation and drainage. [1] [2] [3] It may appear in the first few weeks of newborn infants during the healing process of the umbilical cord due to an umbilical mass. [4] It is the overgrowth of the umbilical tissue. [5]
The fistula can communicate with the mouth (usually causing no symptoms), the paranasal sinuses (giving rhinorrhea) [1] or the facial skin (causing saliva to drain onto the skin). The usual cause is trauma, however salivary fistula can occur as a complication of surgery, or if the duct becomes obstructed with a calculus .
The Fistula Fortnight was a two-week initiative that took place from February 21 to March 6, 2005, where fistula experts treated fistula patients for free at four surgical camps in the northern Nigerian states of Kano, Katsina, Kebbi, and Sokoto.