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This aim of this study was to identify the pre-operative risk factors for conversion during laparoscopic excision of choledochal cyst in paediatric patients.

A retrospective single-centre study was carried out. All paediatric patients (< 18 years) who had undergone laparoscopic excision of choledochal cyst between 2004 and 2021 were reviewed. The outcome was conversion to open surgery and pre-operative factors that affected the conversion rate were analyzed.

Sixty-one patients were included. Conversion was required in 24 cases (39.3%). There was no difference in the conversion rate between the first (before 2012, n = 30) and second (after 2012, n = 31) half of the series (36.7% vs. 42.0%, p = 0.674). Majority was type 1 cyst (86.8%) and the median cyst size was 4.6 cm (IQR: 2.2–6.4 cm). Antenatal diagnosis was available in 18 patients (29.5%). The median age at operation was …