ColostomyIleostomyIleosigmoid knot: An ileosigmoid knot is a form of volvulus in which ileum wraps around the base of the sigmoid and passes beneath itself forming a knot.Rectovaginal fistulaTransverse folds of rectum: The transverse folds of rectum (or Houston's valves) are semi-lunar transverse folds of the rectal wall that protrude into the rectum, not the anal canal as that lies below the rectum. Their use seems to be to support the weight of fecal matter, and prevent its urging toward the anus, which would produce a strong urge to defecate.Fournier gangrene: (ILDS N49.81),Sigmoidocele: Sigmoidocele (also known as Pouch of Douglas descent) refers to a condition where the sigmoid colon descends (prolapses) into the lower pelvic cavity. This can obstruct the rectum and cause symptoms of obstructed defecation.Neodymium: Neodymium is a chemical element with symbol Nd and atomic number 60. It is a soft silvery metal that tarnishes in air.Intestinal malrotationStrictureplasty: Strictureplasty (also spelled Stricturoplasty) is a surgical procedure performed in response to scar tissue that has built up in the intestinal wall from inflammatory bowel conditions such as Crohn's disease. The scar tissue accumulates as a result of repeated damage and healing, with the scarring causing a stricture (a narrowing of the lumen of the bowel).Hinchey Classification: Hinchey Classification is used to describe perforations of the colon due to diverticulitis.Prolapse: Prolapse literally means "to fall out of place‚" from the Latin prolabi meaning "to fall out." In medicine, prolapse is a condition where organs, such as the uterus, fall down or slip out of place.GangreneGastrointestinal perforationEndoanal ultrasound: Endoanal ultrasound is a type of medical investigation which images the structures of the anal canal.Imperforate anusList of eponymous surgical procedures: Eponymous surgical procedures are generally named after the surgeon or surgeons who performed or reported them first. In some instances they are named after the surgeon who popularised them or refined existing procedures, and occasionally are named after the patient who first underwent the procedure.Anal dysplasia: Anal dysplasia is a pre-cancerous condition which occurs when the lining of the anal canal undergoes abnormal changes. It can be classified as low-grade squamous intraepithelial lesions (LSIL) and high-grade squamous intraepithelial lesions (HSIL)Descending perineum syndrome: Descending perineum syndrome (also known as Levator plate sagging) refers to a condition where the perineum "balloons" several centimeters below the bony outlet of the pelvis during strain, although this descent may happen without straining. The syndrome was first described in 1966 by Parks et al.Surgical staple: Surgical staples are specialized staples used in surgery in place of sutures to close skin wounds, connect or remove parts of the bowels or lungs. A more recent development, from the 1990s, uses clips instead of staples for some applications; this does not require the staple to penetrate.Malone antegrade continence enema: right|300px|thumb|The [[vermiform appendix is typically used in the Malone antegrade continence enema.]]Hannah Connell Barker: Hannah Connell Barker (1844–1918) was an early resident of Boulder, Colorado. Barker was a teacher, civic leader, businesswoman and land developer in an era when industrious women were not commonly recognized for their contributions.Chamber reamer: A chamber reamer is a specific type of fluted reamer used by gunsmiths and firearms manufacturers to cut the chamber of a handgun, rifle, or shotgun. The chamber reamer is inserted into the bore of a barrel and held stationary while the barrel is turned around it (typically by means of a lathe).Hirschsprung's diseaseColectomyCervical cancer staging: Cervical cancer staging is the assessment of cervical cancer to decide how far the disease has progressed. Cancer staging generally runs from stage 0, which is pre-cancerous or non-invasive, to stage 4, in which the cancer has spread throughout a significant part of the body.Wound, ostomy, and continence nursing: Wound, ostomy and continence nursing is a nursing tri-specialty involved with the treatment of patients with acute and chronic wounds, patients with an ostomy (those who have had some kind of bowel or bladder diversion, and patients with continence conditions (those with bladder and bowel control and associated skin care issues). WOC nurses use evidence-based knowledge and skills to manage these complex patients.Fistulotomy: A fistulotomy is the surgical opening of a fistulous tract. They can be performed by excision of the tract and surrounding tissue, simple division of the tract, or gradual division and assisted drainage of the tract by means of a seton; a cord passed through the tract in a loop which is slowly tightened over a period of days or weeks.Umbilical cord prolapse