Voiding Dysfunction Relationship between Intravesical Prostatic Protrusion and Postoperative Outcomes in Patients with Benign Prostatic

Purpose: To evaluate the significance of intravesical prostatic protrusion (IPP) for pre-dicting postoperative outcomes in patients with benign prostatic hyperplasia. Materials and Methods: A total of 177 patients with a possible follow-up of at least 6 months who were treated with transurethral resection of the prostate (TURP) were analyzed. We divided the patients into two groups on the basis of the degree of IPP: the significant IPP group (IPP≥5 mm, n=74) and the no significant IPP group (IPP＜5 mm, n=103). We analyzed postoperative changes in parameters, such as the International Prostate Symptom Score (IPSS), IPSS quality-of-life (QoL) score, max-imum urinary flow rate (Qmax), and postvoid residual urine (PVR). The IPSS was sub-divided into voiding (IPSS-v) and storage (IPSS-s) symptoms. Multivariate logistic re-gression analysis was performed to identify whether IPP could predict surgical out-comes of TURP. Results: Preoperative parameters were not significantly different between the two groups except for total prostate volume and transitional zone volume. Postoperative changes in IPSS, IPSS-v, IPSS-s, and QoL score were higher in the significant IPP grou