text: Chronic<unk>  may be classified according to causes into two major subtypes, acute calculous<unk> , and acute acalculous<unk> .
option_0: Chronic cholecystitis classification
option_1: Gallstone disease classification
option_2: Choledocholithiasis classification
option_3: Chronic pancreatitis classification
option_4: Pancreatitis classification
option_5: Acute pancreatitis classification
option_6: Gallbladder cancer classification
option_7: Primary sclerosing cholangitis classification