Ten percent of patients with gallstones have choledocholithiasis, which is sometimes called common-duct stones. Patients who don't develop infection usually recover completely from this disorder. Cholecystitis is a disorder marked by inflammation of the gallbladder. It is usually caused by the passage of a stone from the gallbladder into the cystic duct, which is a tube that connects the gallbladder to the common bile duct. This form of the disorder is called acalculous cholecystitis.
Chronic cholecystitis is most common in the elderly.
The acute form is most likely to occur in middle-aged adults. Cholesterolosis or cholesterol polyps is characterized by deposits of cholesterol crystals in the lining of the gallbladder. This condition may be caused by high levels of cholesterol or inadequate quantities of bile salts, and is usually treated by surgery. Gallstone ileus , which results from a gallstone's blocking the entrance to the large intestine, is most common in elderly people. Surgery usually cures this condition.