Abstract
            Introduction: Benign prostate hyperplasia, pathophysiology contributes to bladder outlet obstruction  due to functional obstruction caused by gland size enlargement resulting in the lower urinary tract  symptoms (LUTS).  
  Objectives: To determine the correlation of the prostate volume with surgical outcomes and  postoperative LUTS in patients with benign prostatic hyperplasia (BPH) undergoing transurethral  resection of the prostate (TURP).  
  Patients and Methods: Patients with BPH who were refractory for medical treatment enrolled in  the study. Patients divided into three groups with attention to their prostate volume conducted by  transabdominal ultrasonography. To evaluate patients’ LUTS, the International Prostate Symptom  Score (IPSS) questionnaire was filled for all patients preoperatively and during the first and third  months follow up sessions.  
  Results: In the current study, mean age of the patients was 66.92 ± 1.08 years. Of 111 patients,  eight patients (7.2%) had prostate volume less than 30 cc, 59 patients (53.2%) had prostate volume  between 30-60 cc, and 44 patients (39.6%) had prostate volume more than 60 cc.  During first month postoperative, mean decrease in IPSS scores in patients with prostate volume less  than 30 cc, prostate volume between 30–60 cc and prostate volume more than 30 cc were 27.72 ±  3.53, 27.32 ± 3.37 and 27.45 ± 2.87, respectively. The ANOVA test showed no significant difference  between the groups (P= 0.93). Mean decrease in IPSS score during third month postoperative, had  no significant difference between the three groups, too (P=0.71). Symptoms alleviation observed in  94.6% and 95.5% of the patients, during first and third months follow-up, respectively.  
  Conclusion: There was no correlation between the IPSS scores decrease and patients’ symptoms  recovery and preoperative prostate volume in patients with BPH who underwent TRUP.