Abstract
One of the most severe complications after laparoscopic unroofing for liver cysts is the formation of a biliary fistula caused by bile duct injury. Recently, intraoperative indocyanine green fluorescent cholangiography has been used to delineate the biliary tree and detect tumors during hepatobiliary surgery. We report a case of laparoscopic unroofing which was performed successfully using intraoperative indocyanine green fluorescent cholangiography. A female patient in her eighties with a liver cyst was admitted to our hospital due to right abdominal distension. Abdominal CT revealed a giant liver cyst causing right hydronephrosis ; therefore, laparoscopic unroofing was planned. During the operation, the large liver cyst containing clear cystic fluid was visualized with the laparoscope. Then, laparoscopic unroofing was performed without bile duct injury under the guidance of intraoperative indocyanine green fluorescent cholangiography. Indocyanine green fluorescent cholangiography is a simple and useful technique to avoid biliary injury during laparoscopic unroofing of liver cysts.