The most generally accepted therapy of choledochal cyst is cystectomy and biliar derivation by laparotomy. Last years, endoscopic papilotomy by ERCP has been a valuable therapeutic alternative, no only a diagnostic method. In this study, we reviewed five pediatric patients operated in our Deparment in last five years for choledochal cyst. The initial therapy was laparotomy (n=4) and endoscopic papilotomy by ERCP (n=1) This one was made in other Hospital. Follow-up has been between one and five years. All patients are living. Four patients who were operated by laparotomy are asyntomatic. Patient who was treated by ERCP needed a new ERCP in first posoperative month. Five years ago, she had a seriuos acute pancreatitis and we decided laparotomy and biliar derivation. Since laparotomy, she had two new episodes of acute pancreatitis and she has needed a new endoscopic dilatation with ballon by ERCP. She has been asyntomatic for four months. In conclusion, we think laparotomy with biliar derivation is safer than ERCP in management of children with choledochal cyst. ERCP must be reserved to emergency situations before laparotomy or after postoperative complications, never as exclusive therapy.