To analyze the causes of Hem-o-lok displacement and bladder stones after laparoscopic radical prostatectomy (LRP), and to discuss the prevention and treatment of bladder stones after LRP.

The data of 12 cases of bladder stones caused by Hem-o-lok displacement after LRP from January 2014 to December 2019 in the Third Affliated Hospital of Sun Yat-sen University, including the surgical plan, intraoperative situation, Hem-o-lok placement sites and number, anastomotic tension, bladder lithotripsy, etc. were analyzed retrospectively.

The pathological staging T1a-T2cN0M0 of 12 cases were performed by intraperitoneal/extraperitoneal LRP. During the operation, 1-2 Hem-o-lok were used near the anastomosis and 4-8 Hem-o-lok were used near the lateral ligament of the prostate. There were 1-2 bladder stones appeared 6-15 months after the operation, and the core of the stones was Hem-o-lok. Among them, 2 cases had anastomotic stenosis and 1 case had anastomotic incarceration. It took transurethral stenosis ring cold knife incision and scar electrotomy to treat bladder neck stenosis, pneumatic ballistic lithotripsy and Hem-o-lok removal, and all patients were cured and discharged.

In LRP, the rational use of Hem-o-lok and skilled anastomosis technique are important to prevent anastomotic stenosis and reduce its displacement to form bladder stones.