A new technique for the laparoscopic treatment of simple hepatic cysts.

Background: Simple hepatic cysts are commonly detected in the general population, both solitary and associated with Adult Dominant Polycystic Kidney Disease (ADPKD). Laparoscopic fenestration is a surgical option adopted as first-line treatment and to treat complications. The techniques reported in the literature are associated with cyst recurrence in up to 41% of cases. Methods: From 2012 to May 2021, 19 symptomatic patients diagnosed with simple HCs underwent an innovative technique for laparoscopic fenestration, which includes simultaneous ethanol injection into the residual cavity. The median follow up was 57 (range 4-116) months. We retrospectively analysed symptomatic relief obtained in the short and long term as primary outcome. We also evaluated the postoperative outcome, recurrence and re-intervention rates. Results: 11 patients (of 19) were female (58 %), with a median age of 58 (range 31-78) years. Most patients (17 of 19) experienced relief of symptoms after intervention (89,5 %). Radiological recurrence occurred in 21% of patients; nevertheless, only one patient, affected by ADPKD, experienced clinical relapse with abdominal discomfort. No patient needed reintervention. There was no major morbidity (Clavien-Dindo III-IV) nor 90-day mortality. The technique allowed early removal of abdominal drainage (median 2.5 days). Conclusions: Laparoscopic fenestration of a simple hepatic cyst, with simultaneous ethanol injection, combines the advantages of the laparoscopic approach with those of injecting sclerosing agent. The described technique is associated with symptomatic relief and a favourable outcome in the postoperative period, as well as with good long term results.