Backgrounds and Objectives: Benign Prostate Hyperplasia is one of the most common medical problems in older men with high rate of morbidity. Urinary retention and bladder stone are two important complications of Benign Prostate Hyperplasia. The aim of this study was to evalute these complications in patients with Benign Prostate Hyperplasia who referred to outpatient urology department of Besat hospital of Hamadan.

Materials and methods: In a descriptive cross- sectional study, for clinical diagnosis and ultrasonography, 105 patients with Benign Prostate Hyperplasia were enrolled to study.

Results: The mean age of patients was 69.5±10.8. The prevalence of urinary retention and bladder stone was 44.8% and 14.3%, respectively. Urinary retention significantly increased by age (p<0.05). The mean prostate volume was 67.9±24 cc. The decrease in pressure and caliber of urine with 78.1% and dribbling with 54.3% were the most common obstruction symptoms and irritant symptom  was the most frequent (82.9%).

Conclusion: Benign Prostate Hyperplasia symptoms are increased with age. In addition, the high frequency of urinary retention and bladder stone in patients showed that they referred   when the diseases worsened  and consequently the complications of disease increased.