Answer: C - Cholecystitis is inflammation of the gallbladder. Most commonly, cholecystitis is the result of hard particles that develop in your gallbladder (gallstones). Gallstones can block the tube (cystic duct) through which bile flows when it leaves the gallbladder. The usual treatment for cholecystitis is a 25% fat diet with fat-soluble vitamin supplementation. Cholecystitis is inflammation of the gall bladder, usually caused by the accumulation of bile due to blockage of the bile duct or gallstone formation. Lower fat restriction is not used because some fat is needed to stimulate gallbladder constriction and drainage of bile.