abdominoperineal resection accessory digestive gland acute renal failure anal sphincterotomy anemia anus appendicectomy artificial extracorporeal liver support bidet bile duct billroth i billroth ii biopsy bisacodyl blackwell publishing blood pressure bow and arrow sign cauterization cecum cholecystectomy colectomy colorectal polyp colostomy computed tomography digital object identifier diverticulosis duodenal switch endoscopic retrograde cholangiopancreatography endoscopy esophagectomy esophagogastroduodenoscopy esophagus fecal occult blood feces fentanyl flatulence gallbladder gastrectomy gastric bypass surgery gastroenterostomy gastrointestinal perforation gastropexy gastrostomy hematocrit hepatectomy herniorrhaphy histology ibuprofen ileostomy ileum inflammatory bowel disease international standard serial number intracolonic explosion jejunoileal bypass laparotomy laser lateral internal sphincterotomy laxative liver liver dialysis liver transplantation lower anterior resection magnesium citrate medical subject headings mesentery midazolam myocardial infarction nissen fundoplication nitrous oxide nuclear magnetic resonance overmedication oxygen saturation pancreas pancreas transplantation pancreatectomy pancreaticoduodenectomy paracentesis partial ileal bypass surgery percutaneous endoscopic gastrostomy percutaneous transhepatic cholangiography petroleum jelly phosphate nephropathy phospho soda polyethylene glycol polypectomy proctoscopy propofol puestow procedure rectal examination rectum sedation sigmoidoscopy sodium picosulfate sphincter stomach stroke surgery toilet ulcerative colitis virtual colonoscopy whole bowel irrigation