Treatment:
We performed a robotic subsegmentectomy of liver segment III via trocars placed in the lower abdomen (Fig. 2a). A resection map was preoperatively prepared (Fig. 2b). Surgery was performed using the intrahepatic glissonean approach in which the S3 Glisson’s sheath was dissected first (Fig. 2c). The liver was then dissected along the ischemic line (Fig. 2d, e). The operative time was 318 minutes and there was 63 ml of intraoperative blood loss. Macroscopically, there was a septated and loculated cavity within liver section III (Fig. 2f). The resection margin was 10 mm.
Microscopically, there were peribiliary glands located around the cyst. The cyst was lined by a single layer of cylindrical epithelium without cytological atypia (Fig. 3a, b). This epithelium was not underlined by an ovarian-like hypercellular stroma, and the cyst was pathologically diagnosed as a hepatic peribiliary cyst