To facilitate extraurethral adenomectomy, we used a semicylindric scalpel and metallic tube (tubus) to make a semioval cut parallel to proximal prostatic portion of the urethra along the posterior semicircle of the bladder neck in 260 patients with prostatic adenoma (PA). The urethra was isolated from the adenomatous tissues. The vesicular cut was prolonged left and right to the level of ureteral ostia. This manipulation was followed with bimanual index finger enucleation of adenomatous tissue. The defect of the vesicourethral segment was sutured with catgut or monocril. Extra-urethral adenomectomy with semicylindric scalpel injured prostatic urethra in lesser extent than endourethral adenomectomy, it reduced the risk of hemorrhage, entailed neither stricture of the posterior urethra nor incontinence of urine in the postoperative period.