Three-dimensional measurement and analysis of benign prostatic hyperplasia |
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| Authors: | Yankun Feng Jianhui Wu He Zhu Qiming Wang Tianyi Li Yong Xu Ping Zhang Lidong Zhai |
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| Affiliation: | 1.Department of Anatomy and Histology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China;2.Department of Urology, Tianjin First Central Hospital, Tianjin, China;3.Department of Anesthesiology, Tianjin Central Hospital of Gynecology and Obstetrics, Tianjin, China;4.Department of Urology, the Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China |
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| Abstract: | BackgroundThe volume and thickness of intravesical prostatic protrusion and other characteristics of benign prostatic hyperplasia have not been investigated. We determine the effects of age and prostate volume on anatomical features of benign prostatic hyperplasia using three-dimensional measurement in this study.MethodsThis retrospective study included a total of 98 patients with benign prostatic hyperplasia. Three-dimensional models of prostate, central gland, peripheral zone, intravesical prostatic protrusion, prostatic urethra and bladder were reconstructed according to pelvic T2-weighted magnetic resonance imaging of these patients. The models were used to measure the intravesical prostatic protrusion volume, intravesical prostatic protrusion thickness, intravesical prostatic protrusion index, intravesical prostatic protrusion, prostate volume, peripheral zone volume, peripheral zone thickness, peripheral zone index, prostatic urethra thickness, the angle and distance of distal prostatic urethra with regard to coronal plane and sagittal plane and so on.ResultsIntravesical prostatic protrusion volume, intravesical prostatic protrusion thickness and peripheral zone volume of prostate volume >80 mL group were significantly higher than these in prostate volume <80 mL group (P<0.001, 0.01, 0.01, respectively). These parameters significantly increased with age (P<0.001, 0.01, 0.05, respectively). Peripheral zone index was significantly lower of prostate volume >80 mL group than these in prostate volume <80 mL group (P<0.05). Peripheral zone index significantly decreased with age (P<0.01). Intravesical prostatic protrusion index had no significant difference in all age groups. Peripheral zone thickness and prostatic urethra thickness had no significant difference in all groups. The distance and angle of distal prostatic urethra prostatic urethra with regard to coronal plane were significantly higher than these with regard to sagittal plane (both P<0.001).ConclusionsThe rearward slope of the prostatic urethra is greater than the left or right offset during the process of benign prostatic hyperplasia. Three-dimensional measurement provides good supports for further clinical and scientific research. |
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| Keywords: | 3D measurement benign prostatic hyperplasia (BPH) intravesical prostatic protrusion peripheral zone prostatic urethra |
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