• An acute or chronic inflammation involving the gallbladder wall. It may be associated with the presence of gallstones.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• The presence of inflammatory changes in the gallbladder.
  Human Phenotype Ontology (HPO)
  The Human Phenotype Ontology Project, 2021
• A disorder characterized by inflammation involving the gallbladder. It may be associated with the presence of gallstones.
  Common Terminology Criteria for Adverse Events
  U.S. National Institutes of Health, 2021
• Cholecystitis is inflammation of the gallbladder, usually resulting from a gallstone blocking the cystic duct. Typically, people have abdominal pain, fever, and nausea.
  Merck Manuals
  Merck & Co., Inc., 2020
• Cholecystitis is defined as inflammation of the gallbladder that occurs most commonly because of an obstruction of the cystic duct from cholelithiasis. Ninety percent of cases involve stones in the cystic duct (ie, calculous cholecystitis), with the other 10% of cases representing acalculous cholecystitis.
  Medscape
  WebMD, 2019
• Cholecystitis (ko-luh-sis-TIE-tis) is inflammation of the gallbladder. Your gallbladder is a small, pear-shaped organ on the right side of your abdomen, beneath your liver. The gallbladder holds a digestive fluid that's released into your small intestine (bile).
  Mayo Clinic
  Mayo Foundation for Medical Education and Research
• Acute cholecystitis is acute gallbladder inflammation and one of the major complications of cholelithiasis or gallstones. It develops in up to 10% of patients with symptomatic gallstones. In most cases (90%), it is caused by complete cystic duct obstruction usually due to an impacted gallstone in the gallbladder neck or cystic duct,...
  Epocrates
  Athenahealth, Inc., 2019