Trigono-cervico-prostatotomy (TCP) incision was performed endoscopically in 102 patients, 99 for benign hypertrophy of the prostate (BHP) less than 35 g., and 3 for bladder neck obstruction. Good results were achieved in 81.4%, symptom relief was achieved in 12.7%, and 5.8% required reoperation. The incidence of retrograde ejaculation was only 20.6%. Patient follow-up was one year. Our findings show the usefulness of ultrasound, urethroscopy and urodynamics in determining the size of the adenoma and in assessing the results achieved by the surgical technique.