Benign Prostatic Hyperplasia is the most common disease that affects elderly men.It is estimated that men aged 40 years or older will have some changes of benign prostatic Hyperplasia.It is so common that 80% of the male population will have prostatic hyperplasia by the age of 80 years. Prospective study of fifty five cases of benign prostatic hyperplasia (BPH) was undertaken.The study included both inpatients and out patients of age group ranging from 40 years to 80 years. Transabdominal sonography of prostate was performed on Real time ultrasound with 3.5 MHz sector probe of RT 3000 (GE) scanner with patient in supine position.Scan films were taken whenever necessary with multiformat camera. Out of 55 cases of with benign prostatic enlargement examined showed Grade I enlargement clinically in 20 cases.Ultrasonically 20 cases and post-operative specimen confirmed. 21 cases as Grade I enlargement.Grade II enlargement was noted clinically in 9 cases, ultrasonically in 12 cases and Postoperative specimen confirmed 11 cases as Grade II enlargement.Grade III enlargement was noted in 12 cases clinically, ultrasonically 9 cases were graded as Grade III and post-operative specimen confirmed 9 cases as Grade III enlargement.