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What is All of the following are causes of acalculous cholecystitis except and explain in detail?
Causes of Acalculous cholecystitis Common causes Elderly and critically ill patients after trauma Burns Longterm TPN Major operations(Abdominal aneurysm repair and cardiopulmonary bypass) Diabetes mellitus Uncommon causes Vasculitis Obstructing GB adenocarcinoma GB torsion Parasitic infestation Unusual bacterial infection - Leptospira, streptococcus, salmonella , Vibrio cholera Ref: Harrison's 19th edition Pgno : 2081