en Hepatic Choristoma: an Unexpected Finding During Cholecystectomy Basic Science Basic Science Case Report Case Report <sec> <div>Introduction</div> <p>Hepatic choristomas, defined as completely separated ectopic liver tissue, are rare. They are most commonly found adjacent to the gallbladder. Details of their anatomy, such as blood supply and biliary drainage, remain ill-defined and are inconsistently described in the literature.</p> </sec> <sec> <div>Case presentation</div> <p>A case of hepatic choristoma was found incidentally in a 77-year-old woman during an elective laparoscopic cholecystectomy.</p> </sec> <sec> <div>Conclusions</div> <p>We outlined its biliary drainage and blood supply, as well as our surgical approach, which may be a guide to surgeons who encounter hepatic choristomas in their clinical practice.</p> </sec> Choristoma,Cholecystectomy,Gallbladder 100 110 http://annbsurg.iums.ac.ir/browse.php?a_code=A-10-31-151&slc_lang=en&sid=1 Julian Klaus Smyth 1003194753284600288 1003194753284600288 Yes Faculty of Medicine, The University of Sydney, Camperdown, Australia Kheng Seong Ng 1003194753284600289 1003194753284600289 No Academic Colorectal Unit, Concord Hospital Campus, University of Sydney, Concord, Australia Elizabeth Caroline Sinclair 1003194753284600290 1003194753284600290 No Samuel Kuo 1003194753284600291 1003194753284600291 No