我科自１９９５年３月－１９９９年３月应用国产ＬＺ－９０００型外科激光治疗仪对５６例前列腺增生症患者行经尿道激光切除治疗，疗效满意。１ 临床资料 ５６例患者年龄５８－８７岁，平均６８．９岁。４１例患者有残余尿，平均８４ｍｌ。有尿潴留病史者９例；合并膀胱结石患 Our department from March 1995 to March 1999 application of domestic LZ-9000 surgical laser treatment of 56 cases of benign prostatic hyperplasia patients underwent transurethral laser resection, the effect is satisfactory. 1 Clinical data 56 patients aged 58-87 years, mean 68.9 years old. 41 patients had residual urine, an average of 84ml. There is a history of urinary retention in 9 cases; patients with bladder stones