• Hasan Özkan Gezer, Pelin Oğuzkurt, Abdulkerim Temiz, Emine İnce, Semire Serin Ezer, and Akgün Hiçsönmez.
• Department of Pediatric Surgery, Başkent University Faculty of Medicine, Ankara, Turkey. hozkangezer@yahoo.com.tr.
• Turk J Gastroenterol. 2016 Jan 1; 27 (1): 23-9.

Background/AimsCholedochal cysts (CCs) are rare abnormalities of the biliary tract. Presenting our clinical experience with CCs herein, we aimed to identify if intrahepatic ductal dilatation indicates true intrahepatic biliary duct disease.Materials And MethodsWe retrospectively reviewed all cases of CCs in children diagnosed at a single center (Başkent University Fac-ulty of Medicine, Department of Pediatric Surgery) institution from 2005 to 2015.ResultsOf 18 patients with CCs, 7 were males (39%). The age range was 3 months to 17 years (mean age, 6.2±3.8 years). Intrahepatic bile duct dilatation was detected in 13 (72%) patients by preoperative scanning. Type I, II, III, and IVA cysts were diagnosed in 13, 1, 1, and 3 patients, respectively. In all patients, total cyst excision and Roux-en-Y hepaticoenterostomy were performed.ConclusionIn this study, most intrahepatic ductal dilatations seen on preoperative imaging were thought to be caused by a distal obstruction, not true intrahepatic biliary duct disease. This study supports the hypothesis that preoperatively distinguishing between type I and type IVA CCs is not necessary; it does not affect the initial treatment. We consider that complete cyst excision with Roux-en-Y hepaticojejunostomy is safe and should be performed soon after diagnosis, irrespective of symptom severity to avoid future complications.

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