False about gallstone ileus
Option B: Rigler's triad - Classic plain abdominal film of triad of small bowel obstruction, pneumobilia & ectopic gallstone Option C: pain may be episodic and recurrent as the impacted stone temporarily obstructs the bowel lumen and then dislodges and moves distally, known as tumbling obstruction Option D: most common site of biliary enteric fistula is gallbladder and duodenum So opting for option A. Ref: Sabiston 20th edition Pgno : 1506-1507
90% patients give history of biliary disease
Causes 1% of all SBO ; around 25% cases in >70 years
Tumbling obstruction
Fistula is mostly formed between duodenum and gallbladder
G.I.T