FALSE about Gallstone ileus:: (A) 90% patients give history of biliary disease, (B) Causes 1% of all SBO; around 25% cases in >70 years, (C) Tumbling obstruction, (D) Fistula is mostly formed between duodenum and gallbladder
Answer is A. Ans. (a) 90% patients give history of biliary disease* PREVIOUS h/o of gall stone related symptoms is seen only in 50% cases.* Gall stone Ileus constitutes only 1% of etiology of all Small bowel obstructions (also <1% of gallstone cases get this complication).* In old age >70 years- 25% cases are due to Gall stone ileus