OBJECTIVE
To analyze the effectiveness of minimally invasive surgery for small and medium sized liver cysts.
MATERIAL AND METHODS
We used minimally invasive technologies in 331 patients with echinococcal liver cysts (small cysts (<3.5 cm) — 49 (14.8%) cases, medium (3.5—7.0 cm) — 196 (59.2%), large (> 7.0 cm) — 86 (25.9%) cases). Conservative treatment was performed in 51 (15.4%) cases, percutaneous puncture treatment (PAIR, D — PA1 and PEVAK) combined with drug therapy — in 32 (9.7%), puncture and external drainage — in 90 (27.2%), open echinococcectomy via minimally invasive access — in 46 (13.9 %), cyst aplatization — in 57 (17.2%) cases. Minimally invasive resection technology was used in 55 (16.6%) patients.
RESULTS
Disappearance or scarring of cysts, shrinkage or structural change with complete resorption of liquid component were noted in 13 (25.5%) patients, no significant structural changes in the cyst (up to 3.5 cm) — in 27 (52.9%). Allergic manifestations occurred in 4 (12.5%) cases, complete regression of cyst — in 27 (84.4%), signs of suppuration — in 3 (9.4%), postoperative cystobiliary fistula — in 12 (13.3%) patients. Nine (10.0%) patients required cystpericystectomy via minimally invasive access. In cyst aplatization, conversion to mini-laparotomy took place in 2 (3.5%) cases, re-arrangement of ports — in 3 (5.3%), bile discharge through the drainage tube — in 2 (3.5%) cases. In resection technologies (n=55), re-arrangement of ports was necessary in 3 (5.4%) cases, intraoperative complications occurred in 3 (5.4%) cases, bleeding — in 3 (5.4%) patients. Postoperative specific complications were noted in 4 (7.3%) cases. Complications Clavien—Dindo type I were noted in 19 (55.8%) cases, type II — 1 (2.9%), IIIA — 5 (14.7%), IIIB — 9 (26.5%) cases. There were adverse events type IV and V. Recurrence of disease was observed in 27 (8.2%) patients.
CONCLUSION
One-stage total or subtotal echinococcectomy is the most effective surgery. Minimally invasive technologies are preferable for small and medium sized echinococcal liver cysts.