Cholecystitis may occur. The word is from Greek, "cholecyst-" meaning "gallbladder" and "-itis" meaning "inflammation". Most people with gallstones do not have symptoms. When a gallstone lodges in the cystic duct, they experience biliary colic. Biliary colic is abdominal pain in the right upper quadrant or epigastric region. It is episodic, occurs after eating greasy or fatty foods, and leads to nausea and/or vomiting. People who suffer from cholecystitis most commonly have symptoms of biliary colic before developing cholecystitis. The pain becomes more severe and constant in cholecystitis. Nausea is common and vomiting occurs in 75% of people with cholecystitis. In
Supernumerary body part considered to have lost much or all of their original function through evolution. These body parts can be classed as additional to the required functioning of the body. In human anatomy the vermiform appendix is sometimes classed as a vestigial remnant. Prosthesis is an artificial extension that replaces a body part, and cybernetics is the study of computer technology in relation to organisms which can include replacement or additional body parts. Body integrity identity disorder (BIID) is a psychiatric disorder in which a person thinks that they have one or more additional limbs than they should, despite having two arms