A<unk>  (plural:<unk> s or<unk> e ; from Latin<unk> , "tube, pipe") in anatomy is an abnormal connection between two hollow spaces (technically, two epithelialized surfaces), such as blood vessels, intestines, or other hollow organs. Types of<unk>  can be described by their location. Anal<unk> s connect between the anal canal and the perianal skin. Anovaginal or rectovaginal<unk> s occur when a hole develops between the anus or rectum and the vagina. Colovaginal<unk> s occur between the colon and the vagina. Urinary tract<unk> s are abnormal openings within the urinary tract or an abnormal connection between the urinary tract and another organ such as between the bladder and the uterus in a vesicouterine<unk> , between the bladder and the vagina in a vesicovaginal<unk> , and between the urethra and the vagina in urethrovaginal<unk> . When occurring between two parts of the intestine, it is known as an enteroenteral<unk> , between the small intestine and the skin as an enterocutaneous<unk> , and between the colon and the skin as a colocutaneous<unk> .<unk> s can result from an infection or inflammation, injury or surgery.<unk> s are sometimes surgically created as part of a treatment, for example arteriovenous<unk> s for hemodialysis. Treatment for<unk>  varies depending on the cause and extent of the<unk> , but often involves surgical intervention combined with antibiotic therapy. In some cases the<unk>  is temporarily covered using a fibrin glue or plug. Catheters may be required to drain a<unk> . Globally, every year between 50,000 and 100,000 women are affected by<unk>  relating to childbirth. In botany, the term is most common in its adjectival forms, where it is used in binomial names to refer to species that are distinguished by hollow or tubular structures. Monarda<unk> sa, for example, has tubular flowers. The term was first used in the 14th century.
Fistula
Fecal impaction
Intestinal ischemia
Defecation
Vesicointestinal fistula
Bowel obstruction
Organ perforation
Evisceration 