Introduction : For the type I choledochal cysts, complete surgical excision and Roux-en-Y bilioenteric reconstruction is treatment of choice. In adults, most of the patients with choledochal cyst are female. These patients are interest in cosmetic result, so they want minimally invasive surgery. Here, we introduce a robotic single incision plus one port surgical technique for a choledochal cyst excision (RSSp1EC).

Methods : A 52 year old female patient diagnosed by choledochal cyst, type I. And she underwent RSSp1EC with hepaticojejunostomy and extracorporeal jejunojejunostomy on December 18, 2017. We were using robotic single site surgical system (the da Vinci Xi?Surgical System (Intuitive Surgical? Sunnyvale, CA)) with one additional robotic 8mm port. Single-site Port was placed at the umbilicus and one additional port was placed right side of umbilicus at the axillary line. We used the 3rd robot arm, EndoWrist?needle driver and EndoWrist?scissor which include da Vinci monopolar cautery instruments through the additional port.

Results : Total operation time was 360 min. The estimated blood loss was below the 30 ml. Pathologic examination was accorded in choledochal cyst without evidence of malignancy. The patient was discharged on postoperative days of 6 in good condition.

Conclusions : RSSp1EC technique is feasible and safety method. And considering its cosmetic results, RSSp1EC technique will be another good way to treat choledochal cyst.