This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Not a complication of Gall stones 
Select and explain. 
A. Acute Cholangitis, B. Diveiculosis, C. Mucocele, D. Empyema of the gall bladder
B: Diveiculosis
Answer: B: Diveiculosis 
Explanation: Gallstones can result in mucocele of gallbladder due to obstruction of cystic duct by a stone in the neck(hamann's pouch)of the gallbladder,without any infection or inflammation,thereby resulting in absorption of all bile and secretion of mucous into the gallbladder allowing gallbladder to distend(Hydrops of the gallbladder).Mucocele of gallbladder gets infected to produce Empyema of gallbladder where it is filled with pus. Gallstones can also lead to recurrent cholangitis Reference:SRB's manual of surgery,5th edition,page no:642