Tehran University of Medical Sciences (TUMS) Academic Journal of Surgery 2423-3218 4 2 2017 10 09 28 30 Mojtaba Javaherzadeh Associate Professor, Department of Surgery, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran Ali Shekarchizadeh Researcher, Poursina Hakim Gastrointestinal Research Center, Poursina Hakim Research Institution, Isfahan, Iran Amir Hossein Karimi General Surgeon, Department of Surgery, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran Babak Sabet Associate Professor, Department of Surgery, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran 2017 10 09 Background: Hydatid cyst communicated with biliary tract increases the morbidity and mortality rates. Therefore, early detection and treatment are vital. Methods: From 96 patients undergone hydatid cyst surgery, 12 were excluded. The specifications, size, location, and position of the cyst, the condition of the cyst wall thickness, the caught lobe, cyst rupture, liver abscess, and the size of the inside and outside liver bile ducts were identified through computed tomography scanning. Age, gender, icterus, white blood cell (WBC) count, the total, direct, and indirect bilirubin, alkaline phosphatase, alanine aminotransferase, and aspartate aminotransferase were identified. Results: In 21 patients (13 men and 8 women), there was communication between the hydatid cyst and biliary tract; from them, 14 patients had icterus. There were significant differences between the size of the cyst, the levels of liver enzymes, bilirubin, and alkaline phosphatase, and WBC count in communicated and non-communicated hydatid cysts (P = 0.001). There were no significant differences between the two groups in terms of age, gender, location of the cysts in the liver, and the thickness of the liver. Conclusions: Only the cyst size and the level of bilirubin were the predicting factor for the communication between hydatid cyst and biliary tract. https://ajs.tums.ac.ir/index.php/ajs/article/view/118 https://ajs.tums.ac.ir/index.php/ajs/article/download/118/61