Cholecystoduodnal Fistula-Gallstones Finds their Way
We present a case of 40 year female who was diagnosed with cholelithiasis few years back but was managed conservatively and on CECT after 10 year shows presence of cholecysto-duodnal fistula.
Case Report
A 40 year old female with history of gall stone for 12 years and pain epigastrium for 2 months. She has history of similar complaints few year back in 2009, which was recurrent in nature in particular after taking fatty meals, Got her USG done and was diagnosed with cholelitiasis which was also largely ignored and got relief from injectable pain subsides, and the pain subsided after 3-4 recurrences within in period of 6 months. Again in 2019 she presensented with pain epigastrium but less severe in nature then earlier. CECT was done and images showing fistulous communication between 2nd part of duodenum and gallbladder though not clearly demonstrated, gallbladder is contracted and contains air in its lumen. Features are suggestive of cholecystoduodnal fistula and chronic cholecystitis.


Discussion
Cholecystoduodnal fistula is fistulous communication between gall bladder and duodenum. It is mostly secondary to gallstones which migrate to the duodenum [1, 2]. It may be is some cases iatrogenic in origin, especially after sphincterotomy and after hepaticojejunostomy or choledochojejunostomy [3, 4, 5]. Although patients may be asymptomatic, possible complications include gallstone ileus, Bouveret syndrome or recurrent episodes of cholangitis. It has variable clinical presentation is there, it can be asymptomatic or may present with bouveret syndrome [6].
Enterobiliary fistula was first described by Bartholin in 1654. Sixty-eight per cent of cases occur between the gallbladder wall and duodenum and may cause gallstone ileus and Bouveret syndromes [7]. The key imaging diagnostic clues are
Conclusion
In patients with peptic ulcer disease and history of previous imaging suggesting cholelitihiasis while in present scan having no evidence of gall stones, one must consider the presence of a proximal choledochoduodenal fistula. Patients with recurrent episodes of cholangitis should be investigated for a distal choledochoduodenal fistula. A high index of suspicion is needed from radiologist too for this relatively difficult condition to diagnose [10, 11].
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