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Kim JH, Kim HY, Lee SJ, Lee DS. Water Vapor Therapy and Zonal Anatomy of the Prostate. Int Neurourol J 2024; 28:67-69. [PMID: 38569622 PMCID: PMC10990760 DOI: 10.5213/inj.2346278.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/27/2023] [Indexed: 04/05/2024] Open
Abstract
Water vapor therapy using Rezūm has been recently introduced as a minimally invasive surgery for benign prostatic hyperplasia and is being increasingly performed. However, there is a lack of real-time images showing this practice and how convective water vapor acts in the prostate gland. In real-time ultrasonography, convective water vapor rapidly spreads throughout the ipsilateral transitional zone and is mostly limited within the transitional zone. For educational purposes, we would like to present a case to help readers understand water vapor therapy by visualizing convective water vapor using real-time ultrasound.
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Affiliation(s)
- Jang Hwan Kim
- Department of Urology and Urological Science Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hee Youn Kim
- Department of Urology, St. Vincent’s Hospital, The Catholic University of Korea, Suwon, Korea
| | - Seung-Ju Lee
- Department of Urology, St. Vincent’s Hospital, The Catholic University of Korea, Suwon, Korea
| | - Dong Sup Lee
- Department of Urology, St. Vincent’s Hospital, The Catholic University of Korea, Suwon, Korea
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Lorenzo G, di Muzio N, Deantoni CL, Cozzarini C, Fodor A, Briganti A, Montorsi F, Pérez-García VM, Gomez H, Reali A. Patient-specific forecasting of postradiotherapy prostate-specific antigen kinetics enables early prediction of biochemical relapse. iScience 2022; 25:105430. [DOI: 10.1016/j.isci.2022.105430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 09/04/2022] [Accepted: 10/19/2022] [Indexed: 11/06/2022] Open
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Liu H, Tian Y, Luo G, Su Z, Ban Y, Wang Z, Sun Z. Modified bladder outlet obstruction index for powerful efficacy prediction of transurethral resection of prostate with benign prostatic hyperplasia. BMC Urol 2021; 21:170. [PMID: 34872539 PMCID: PMC8650302 DOI: 10.1186/s12894-021-00937-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 11/29/2021] [Indexed: 11/20/2022] Open
Abstract
Background The correlation between modified bladder outlet obstruction index (MBOOI) and surgical efficacy still remains unknown. The purpose of the study was to investigate the clinical value of the MBOOI and its use in predicting surgical efficacy in men receiving transurethral resection of the prostate (TURP).
Methods A total of 403 patients with benign prostate hyperplasia (BPH) were included in this study. The International Prostate Symptom Score (IPSS), quality of life (QoL) index, transrectal ultrasonography, and pressure flow study were conducted for all patients. The bladder outlet obstruction index (BOOI) (PdetQmax–2Qmax) and MBOOI (Pves–2Qmax) were calculated. All patients underwent TURP, and surgical efficacy was accessed by the improvements in IPSS, QoL, and Qmax 6 months after surgery. The association between surgical efficacy and baseline factors was statistically analyzed. Results A comparison of effective and ineffective groups based on the overall efficacy showed that significant differences were observed in PSA, Pves, PdetQmax, Pabd, BOOI, MBOOI, TZV, TZI, IPSS-t, IPSS-v, IPSS-s, Qmax, and PVR at baseline (p < 0.05). Binary logistic regression analysis suggested that MBOOI was the only baseline parameter correlated with the improvements in IPSS, QoL, Qmax, and the overall efficacy. Additionally, the ROC analysis further verified that MBOOI was more optimal than BOOI, TZV and TZI in predicting the surgical efficacy. Conclusion Although both MBOOI and BOOI can predict the clinical symptoms and surgical efficacy of BPH patients to a certain extent, however, compared to BOOI, MBOOI may be a more useful factor that can be used to predict the surgical efficacy of TURP. Trial registration retrospectively registered.
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Affiliation(s)
- Hongming Liu
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Ye Tian
- Department of Urology, Guizhou Provincial People's Hospital, Guiyang, China.
| | - Guangheng Luo
- Department of Urology, Guizhou Provincial People's Hospital, Guiyang, China
| | - Zhiyong Su
- Department of Urology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Yong Ban
- Department of Urology, Guizhou Provincial People's Hospital, Guiyang, China
| | - Zhen Wang
- Department of Urology, Guizhou Provincial People's Hospital, Guiyang, China
| | - Zhaolin Sun
- Department of Urology, Guizhou Provincial People's Hospital, Guiyang, China
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Mauler DJ, Sella DM, Dora CD. Utilizing Preoperative Magnetic Resonance Imaging to Self-assess Enucleation Ratio in Holmium Laser Enucleation of the Prostate. Urology 2021; 160:176-181. [PMID: 34813831 DOI: 10.1016/j.urology.2021.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/20/2021] [Accepted: 11/08/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To determine if transition zone (TZ) volume as measured by magnetic resonance imaging (MRI) correlates closely with specimen weight and postoperative prostate-specific antigen (PSA) and to determine if this correlation improved with increased experience. We hypothesize that information from a preoperative MRI can be leveraged to self-assess competency in holmium laser enucleation of the prostate (HoLEP). METHODS From August 2018 to June 2021 567 men were identified who underwent HoLEP by a single surgeon and had their data entered into a database. Ninety-seven men were identified who had an MRI in our image archives. A radiologist blinded to the specimen weight measured the transition zone (TZ) using image analysis software. TZ volume was then correlated with specimen weight for the entire study period and subdivided into four consecutive periods. Preoperative and Postoperative PSA data was analyzed. RESULTS Seventeen percent of men who underwent HoLEP at our institution had an MRI preoperatively. The TZ to total prostate volume ratio was 70%. The overall correlation coefficient between TZ volume and specimen weight was 0.914 (P-value <.001). There was no statistically significant improvement in correlation coefficient over time when divided into four equal subgroups. Median PSA reduction was 91% (7.9-0.7 ng/dL). CONCLUSION Preoperative MRI derived TZ volume correlates closely with specimen weight. We present a reference cohort from a high volume HoLEP center to facilitate HoLEP learners to self-assess competency. Lack of increased correlation over time is likely due to an experienced HoLEP surgeon who is on the flatter portion of his learning curve.
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Affiliation(s)
| | - David M Sella
- Department of Radiology, Mayo Clinic Florida, Jacksonville, FL
| | - Chandler D Dora
- Department of Urology, Mayo Clinic Florida, Jacksonville, FL.
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Relationship between serum total testosterone and prostate volume in aging men. Sci Rep 2021; 11:14122. [PMID: 34239023 PMCID: PMC8266836 DOI: 10.1038/s41598-021-93728-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 06/22/2021] [Indexed: 11/09/2022] Open
Abstract
Total testosterone levels decline with age, while prostate volume and the prevalence of benign prostatic hyperplasia increase with age. We sought to investigate the correlation of serum testosterone levels with prostate volume in aging men. We analyzed clinical data obtained from 416 ostensibly healthy men who underwent routine health check-ups and recruited and collected data from these subjects 4 years later. We analyzed the correlation between prostate volume and relevant factors, as well as the correlation between changes in prostate volume and low testosterone over a 4-year period. Men with low testosterone had significantly larger prostate volume than those in the normal testosterone group (26.86 ± 8.75 vs. 24.06 ± 6.77 P = 0.02), and subjects with low testosterone had significantly higher levels of obesity-related factors, including waist circumference, body mass index, and insulin (all P < 0.001). After adjustment for age, testosterone level was negatively correlated with prostate volume (P = 0.004), and prostate volume and 4-year changes in prostate volume were associated with low testosterone. With increased testosterone level, prostate volume showed a significant linear decreasing trend. These findings provide evidence of the relationship between testosterone and prostate volume. Additional large studies are needed to confirm these preliminary results.
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Xiong Y, Zhang Y, Li X, Qin F, Yuan J. The prevalence and associated factors of lower urinary tract symptoms suggestive of benign prostatic hyperplasia in aging males. Aging Male 2020; 23:1432-1439. [PMID: 32583703 DOI: 10.1080/13685538.2020.1781806] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVE To investigate the prevalence and associated factors of lower urinary tract symptoms suggestive of benign prostatic hyperplasia (LUTS/BPH) in Chinese aging males. METHOD Data downloaded from the China Health and Retirement Longitudinal Study (CHARLS) was subjected to descriptive statistics followed by univariate logistic regression and multivariate logistic regression. RESULTS A total of 8563 participants with an overall LUTS/BPH prevalence of 11.97% were enrolled. With aging, the LUTS/BPH prevalence increased (p < 0.001). Men aged over 70 years suffered the highest prevalence of 22.70%. Marital status did nothing to the suffering of LUTS/BPH. Subjects receiving more education or assessed as depression displayed higher incidence of LUTS/BPH (p < 0.001). In rural villages, settlers showed lower prevalence of 10.00% compared to 16.49% for urban residents. Smoking, sleeping time and alcohol consumption seemed to play a protective role in the occurrence of LUTS/BPH. One who slept more than 8 h, was smoking, and drank more than once a month had the lowest prevalence (p ≤ 0.001). CONCLUSIONS For Chinese aging population, LUTS/BPH prevalence increased with aging and was interfered by educational level, depression, sleeping time, geographical region, smoke and alcohol consumption.
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Affiliation(s)
- Yang Xiong
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Yangchang Zhang
- Department of Epidemiology and Health Statistics, School of Public Health and Management, Chongqing Medical University, Chongqing, China
| | - Xiaoyu Li
- Laboratory of Innovation, Basic Medical Experimental Teaching Centre, Chongqing Medical University, Chongqing, China
| | - Feng Qin
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China
| | - Jiuhong Yuan
- Andrology Laboratory, West China Hospital, Sichuan University, Chengdu, China
- Department of Urology, West China Hospital, Sichuan University, Chengdu, China
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Qian S, Sheng X, Xu D, Shen H, Qi J, Wu Y. Variation of prostatic morphology in Chinese benign prostatic hyperplasia patients of different age decades. Aging Male 2020; 23:457-463. [PMID: 30777473 DOI: 10.1080/13685538.2018.1522626] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVE Our study aimed to investigate the age-related growth in prostatic morphological parameters in Chinese benign prostatic hyperplasia (BPH) patients, and to find out the regularity of how these parameters change with aging. METHODS Medical records of 1038 BPH patients were obtained from a retrospective database of first-visit men with BPH. Change regularity of prostatic anatomical factors with aging was analyzed. RESULTS Patients were classified into four groups according to different age decades. All prostatic anatomical factors assessed in this research increased with age growth (p < .0001). However, these anatomical factors sustained stably when older than 70 years. By analyzing the detailed correlation between age and prostatic morphological parameters, transitional zone index (TZI) (Pearson r = 0.358, r2 = 0.128, p < .0001) and transitional zone width (TZW) (Pearson r = 0.344, r 2= 0.118, p < .0001) showed the best correlation coefficient with age. After adjusted the influence of cardiovascular disease (CVD) and diabetes mellitus (DM), the result remained still similarly. CONCLUSION Prostatic morphological parameters increase progressively with age growth when patients were younger than 70 years, indicating reasonable interventions to be provided to BPH patients before 70 years. In addition, TZI and TZW are two practical, easy-to-measure prostatic parameters that are significantly associated with the growth of age compared to others.
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Affiliation(s)
- Subo Qian
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xujun Sheng
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ding Xu
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Haibo Shen
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jun Qi
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yu Wu
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Wu Y, Ding Y, Cao QF, Qian SB, Wang C, Duan HQ, Gu J, Shen HB. The relationship between glucose homeostasis status and prostate size in aging Chinese males with benign prostatic hyperplasia. World J Urol 2020; 38:2923-2931. [PMID: 31965286 PMCID: PMC7644519 DOI: 10.1007/s00345-020-03084-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 01/06/2020] [Indexed: 12/13/2022] Open
Abstract
PURPOSE Increasing evidence shows that many metabolic factors are involved in the progression of benign prostatic hyperplasia (BPH). We aimed to assess the relationship between the status of glucose homeostasis and prostate size in aging Chinese males undergoing transurethral resection of the prostate (TURP) for BPH. METHODS A total of 1006 medical records of BPH patients undergoing TURP were reviewed. Prostate size was measured by transrectal ultrasound. Annual total prostate (TP) and transitional zone (TZ) growth rates were calculated. According to the American Diabetes Association criteria, the patients were categorized as normoglycemic, prediabetic, or diabetic. Levels of glucose homeostasis and other variables were considered independent variables in an effort to evaluate any potential correlations using non-adjusted and multivariate-adjusted regression models. RESULTS A total of 659 individuals were included in the study. BPH patients < 70 years old and ≥ 70 years old in the normoglycemic group had a stable prostate growth rate. The change in prostate size in those younger than 70 years, however, was faster in the prediabetic and diabetic group. Further analysis revealed that abnormal glucose homeostasis was positively correlated with prostate size. In those younger than 70 years, compared with the normal glucose group, the adjusted odds ratio (OR) for TP and TZ enlargement in the prediabetic group was 2.27 (95%CI 1.29-4.00) and 3.19 (95%CI 1.78-5.72), respectively, and the adjusted ORs were 4.74 (95%CI 2.18-10.30) and 6.16 (95%CI 2.70-14.06), respectively, for men with diabetes. However there was no significant difference among men aged ≥ 70 years. CONCLUSIONS Among patients undergoing TURP, the prostate volume and growth rate were affected by different status of glucose homeostasis. Hyperglycemia may play an important role in prostate growth.
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Affiliation(s)
- Y Wu
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Y Ding
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - Q F Cao
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - S B Qian
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - C Wang
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - H Q Duan
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - J Gu
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, 1665 Kongjiang Road, Shanghai, 200092, China
| | - H B Shen
- Department of Urology, Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, 1665 Kongjiang Road, Shanghai, 200092, China.
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Computer simulations suggest that prostate enlargement due to benign prostatic hyperplasia mechanically impedes prostate cancer growth. Proc Natl Acad Sci U S A 2019; 116:1152-1161. [PMID: 30617074 DOI: 10.1073/pnas.1815735116] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Prostate cancer and benign prostatic hyperplasia are common genitourinary diseases in aging men. Both pathologies may coexist and share numerous similarities, which have suggested several connections or some interplay between them. However, solid evidence confirming their existence is lacking. Recent studies on extensive series of prostatectomy specimens have shown that tumors originating in larger prostates present favorable pathological features. Hence, large prostates may exert a protective effect against prostate cancer. In this work, we propose a mechanical explanation for this phenomenon. The mechanical stress fields that originate as tumors enlarge have been shown to slow down their dynamics. Benign prostatic hyperplasia contributes to these mechanical stress fields, hence further restraining prostate cancer growth. We derived a tissue-scale, patient-specific mechanically coupled mathematical model to qualitatively investigate the mechanical interaction of prostate cancer and benign prostatic hyperplasia. This model was calibrated by studying the deformation caused by each disease independently. Our simulations show that a history of benign prostatic hyperplasia creates mechanical stress fields in the prostate that impede prostatic tumor growth and limit its invasiveness. The technology presented herein may assist physicians in the clinical management of benign prostate hyperplasia and prostate cancer by predicting pathological outcomes on a tissue-scale, patient-specific basis.
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