ABSTRACT
We conducted the present study to assess the correlation of the prostatic anatomical parameters, especially the ratio of peripheral zone thickness and transitional zone thickness, with clinical and uroflowmetry characteristics suggestive of benign prostate hyperplasia (BPH). A total of 468 consecutive patients with a detailed medical history were identified. All patients were evaluated by scoring subjective symptoms with the International Prostate Symptom Score (IPSS) and quality of life (QoL). The prostatic anatomical parameters were measured using transrectal ultrasonography, and postvoid residual urine and maximum flow rate (Qmax) values were also determined. Pearson's correlation analysis revealed that both total prostate volume (TPV; r = 0.160, P < 0.001) and transitional zone volume (TZV; r = 0.104, P = 0.016) increased with patients' age; however, no correlations were observed of TPV, TZV, transitional zone index (TZI), and transitional zone thickness (TZT) with IPSS or QoL (all P >0.05). Peripheral to transitional zone index (PTI) was found negatively correlated with total IPSS (r = -0.113, P = 0.024), storage IPSS (r = -0.103, P = 0.041), and voiding IPSS (r = -0.123, P = 0.014). As regards the uroflowmetry characteristics, PTI (r = 0.157, P = 0.007) was indicated to be positively correlated with Qmaxand negatively correlated with TZI (r = -0.119, P = 0.042) and TZT (r = -0.118, P = 0.045), but not correlated with TPV, TZV, or peripheral zone thickness (PZT) (all P > 0.05). Postvoid residual urine (PVR) had not correlated with all the prostatic anatomical variables (all P > 0.05). This is the first study that formally proposed the concept of PTI, which is an easy-to-measure prostate anatomical parameter which significantly correlates with total IPSS, storage IPSS, voiding IPSS, and Qmax, suggesting that PTI would be useful in evaluating and managing men with lower urinary tract symptoms (LUTS)/BPH. However, well-designed studies are mandatory to verify the clinical utility of PTI.
Subject(s)
Prostate/pathology , Prostatic Hyperplasia/pathology , Aged , Humans , Male , Prostate/anatomy & histology , Prostate/diagnostic imaging , Prostatic Hyperplasia/diagnostic imaging , Retrospective Studies , Ultrasonography , UrodynamicsABSTRACT
We conducted the present study to assess the correlation of the prostatic anatomical parameters, especially the ratio of peripheral zone thickness and transitional zone thickness, with clinical and uroflowmetry characteristics suggestive of benign prostate hyperplasia (BPH). A total of 468 consecutive patients with a detailed medical history were identified. All patients were evaluated by scoring subjective symptoms with the International Prostate Symptom Score (IPSS) and quality of life (QoL). The prostatic anatomical parameters were measured using transrectal ultrasonography, and postvoid residual urine and maximum flow rate (Q
ABSTRACT
BPH is a most common benign disease causing dysuria in old and middle-aged males. Studies show that the total prostate volume (TPV) is not necessarily correlated with the severity of lower urinary tract symptoms (LUTS). All BPH hyperplastic nodules occur in the prostate transitional zone and the glandular region around the urethra. Therefore, there are few clinical studies on the correlation between the peripheral zone thickness (PZT) of the prostate and BPH/LUTS. Relevant literature on the correlation between PZT and BPH/LUTS published at home and abroad in recent years indicate that PZT is a novel, simple, economical, reliable and simple measurement of prostate parameters independently associated with urinary tract symptoms in patients with BPH and will be a new factor in the evaluation and management of male BPH/LUTS. However, further research is needed to clarify the clinical utility of PZT in place of invasive urodynamic testing, and its applicability to the BPH patients in China more has to be certified by more clinical and prospective studies.
