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Ham WS, Park JS, Jang WS, Kim J. Role of Maximal Transurethral Resection Preceding Partial Cystectomy for Muscle-Invasive Bladder Cancer. Ann Surg Oncol 2024; 31:1384-1392. [PMID: 37884699 DOI: 10.1245/s10434-023-14449-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 10/02/2023] [Indexed: 10/28/2023]
Abstract
PURPOSE We aimed to evaluate whether maximal transurethral resection (TUR) affects the oncological outcome of partial cystectomy (PC) performed in patients with muscle-invasive bladder cancer (MIBC), although radical cystectomy (RC) and trimodal therapy (TMT) are regarded as standard treatments for MIBC. METHODS In this retrospective study, we evaluated the data of 98 patients who underwent PC due to MIBC between January 2006 and December 2018. Of the 98 patients, 71 underwent maximal TUR. We evaluated the recurrence-free survival (PFS), pelvic recurrence-free survival (pPFS), cancer-specific survival (CSS), and overall survival (OS) using the Kaplan-Meier method according to the maximal TUR status. Variables associated with survival were analyzed using Cox regression analyses. RESULTS The 5-year PFS (42.5% vs. 20.3%, p = 0.008), pPFS (50.7% vs. 24.1%, p = 0.003), and CSS (74.0% vs. 51.0%, p = 0.016) were also higher in patients who underwent maximal TUR. The multivariable Cox regression analysis showed that maximal TUR was associated with PFS (hazard ratio [HR] = 0.500, p = 0.029), pPFS (HR = 0.353, p = 0.004), and CSS (HR = 0.416, p = 0.027). However, maximal TUR did not affect the OS (HR = 0.618, p = 0.132). CONCLUSION PC resulted in acceptable oncological outcomes in patients with MIBC, while maximal TUR played an important role in improving the oncological outcomes. PC after maximal TUR can be suggested as a treatment option for MIBC patients who are unable to undergo RC and TMT.
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Affiliation(s)
- Won Sik Ham
- Department of Urology and Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Jee Soo Park
- Department of Urology and Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Won Sik Jang
- Department of Urology and Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Jongchan Kim
- Department of Urology and Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea.
- Department of Urology, Yongin Severance Hospital, Yonsei University Health System, Yongin-si, Gyeonggi-do, Korea.
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Morra S, Scheipner L, Baudo A, Jannello LMI, de Angelis M, Siech C, Goyal JA, Touma N, Tian Z, Saad F, Califano G, Creta M, Celentano G, Shariat SF, Ahyai S, Carmignani L, de Cobelli O, Musi G, Briganti A, Chun FKH, Longo N, Karakiewicz PI. The Association between Urinary Diversion Type and Other-Cause Mortality in Radical Cystectomy Patients. Cancers (Basel) 2024; 16:429. [PMID: 38275870 PMCID: PMC10813972 DOI: 10.3390/cancers16020429] [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: 12/13/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND It is unknown whether more complex UD, such as orthotopic neobladder and abdominal pouch, may be associated with higher OCM rates than ileal conduit. We addressed this knowledge gap within the SEER database 2004-2020. METHODS All T1-T4aN0M0 radical cystectomy (RC) patients were identified. After 1:1 propensity score matching (PSM), cumulative incidence plots, univariable and multivariable competing-risks regression (CRR) models were used to test differences in OCM rates according to UD type (orthotopic neobladder vs. abdominal pouch vs. ileal conduit). RESULTS Of all 3008 RC patients, 2380 (79%) underwent ileal conduit vs. 628 (21%) who underwent continent UD (268 orthotopic neobladder and 360 abdominal pouch). After PSM relative to ileal conduit, neither continent UD (13 vs. 15%; p = 0.1) nor orthotopic neobladder (13 vs. 16%; p = 0.4) nor abdominal pouch (13 vs. 15%; p = 0.2) were associated with higher 10-year OCM rates. After PSM and after adjustment for cancer-specific mortality (CSM), as well as after multivariable adjustments relative to ileal conduit, neither continent UD (Hazard Ratio [HR]:0.73; p = 0.1), nor orthotopic neobladder (HR:0.84; p = 0.5) nor abdominal pouch (HR:0.77; p = 0.2) were associated with higher OCM. CONCLUSIONS It appears that more complex UD types, such as orthotopic neobladder and abdominal pouch are not associated with higher OCM relative to ileal conduit.
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Affiliation(s)
- Simone Morra
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
- Department of Neurosciences, Science of Reproduction and Odontostomatology, University of Naples Federico II, 80131 Naples, Italy; (G.C.); (M.C.); (G.C.); (N.L.)
| | - Lukas Scheipner
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
- Department of Urology, Medical University of Graz, 8010 Graz, Austria;
| | - Andrea Baudo
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
- Department of Urology, IRCCS Policlinico San Donato, 20097 Milan, Italy;
| | - Letizia Maria Ippolita Jannello
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
- Department of Urology, IEO European Institute of Oncology, IRCCS, Via Ripamonti 435, 20141 Milan, Italy; (O.d.C.); (G.M.)
- Department of Urology, Università degli Studi di Milano, 20126 Milan, Italy
| | - Mario de Angelis
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
- Division of Experimental Oncology, Unit of Urology, Urological Research Institute (URI), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
| | - Carolin Siech
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
- Department of Urology, University Hospital Frankfurt, Goethe University Frankfurt am Main, 39120 Frankfurt am Main, Germany;
| | - Jordan A. Goyal
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
| | - Nawar Touma
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
| | - Zhe Tian
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
| | - Fred Saad
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
| | - Gianluigi Califano
- Department of Neurosciences, Science of Reproduction and Odontostomatology, University of Naples Federico II, 80131 Naples, Italy; (G.C.); (M.C.); (G.C.); (N.L.)
| | - Massimiliano Creta
- Department of Neurosciences, Science of Reproduction and Odontostomatology, University of Naples Federico II, 80131 Naples, Italy; (G.C.); (M.C.); (G.C.); (N.L.)
| | - Giuseppe Celentano
- Department of Neurosciences, Science of Reproduction and Odontostomatology, University of Naples Federico II, 80131 Naples, Italy; (G.C.); (M.C.); (G.C.); (N.L.)
| | - Shahrokh F. Shariat
- Department of Urology, Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria;
- Department of Urology, Weill Cornell Medical College, New York, NY 10065, USA
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Hourani Center of Applied Scientific Research, Al-Ahliyya Amman University, Amman 19328, Jordan
| | - Sascha Ahyai
- Department of Urology, Medical University of Graz, 8010 Graz, Austria;
| | - Luca Carmignani
- Department of Urology, IRCCS Policlinico San Donato, 20097 Milan, Italy;
- Department of Urology, IRCCS Ospedale Galeazzi—Sant’Ambrogio, 20157 Milan, Italy
| | - Ottavio de Cobelli
- Department of Urology, IEO European Institute of Oncology, IRCCS, Via Ripamonti 435, 20141 Milan, Italy; (O.d.C.); (G.M.)
- Department of Oncology and Haemato-Oncology, Università Degli Studi di Milano, 20122 Milan, Italy
| | - Gennaro Musi
- Department of Urology, IEO European Institute of Oncology, IRCCS, Via Ripamonti 435, 20141 Milan, Italy; (O.d.C.); (G.M.)
- Department of Oncology and Haemato-Oncology, Università Degli Studi di Milano, 20122 Milan, Italy
| | - Alberto Briganti
- Division of Experimental Oncology, Unit of Urology, Urological Research Institute (URI), IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy;
| | - Felix K. H. Chun
- Department of Urology, University Hospital Frankfurt, Goethe University Frankfurt am Main, 39120 Frankfurt am Main, Germany;
| | - Nicola Longo
- Department of Neurosciences, Science of Reproduction and Odontostomatology, University of Naples Federico II, 80131 Naples, Italy; (G.C.); (M.C.); (G.C.); (N.L.)
| | - Pierre I. Karakiewicz
- Cancer Prognostics and Health Outcomes Unit, Division of Urology, University of Montréal Health Center, Montréal, QC H2X 3E4, Canada; (L.S.); (A.B.); (L.M.I.J.); (M.d.A.); (C.S.); (J.A.G.); (N.T.); (Z.T.); (F.S.); (P.I.K.)
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Morizane S, Nakane K, Tanaka T, Zennami K, Muraoka K, Ebara S, Miura N, Uemura K, Sobu R, Hoshi A, Taoka R, Sugimoto M, Noma H, Sunada H, Nishiyama H, Habuchi T, Ikeda I, Saika T, Makiyama K, Shiroki R, Masumori N, Koie T, Takenaka A. Comparison of perioperative outcomes and complications between intracorporeal, extracorporeal, and hybrid ileal conduit urinary diversion during robot-assisted radical cystectomy: a comparative propensity score-matched analysis from nationwide multi-institutional study in Japan. Int J Clin Oncol 2024; 29:64-71. [PMID: 37864612 DOI: 10.1007/s10147-023-02425-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 10/05/2023] [Indexed: 10/23/2023]
Abstract
BACKGROUND To investigate the impact of different urinary diversion (UD) techniques on the peri- and postoperative complications of robot-assisted radical cystectomy (RARC) with ileal conduit. METHODS We retrospectively analyzed 373 patients undergoing RARC with ileal conduit at 11 institutions in Japan between April 2018 and December 2021. Propensity score weighting was performed to adjust for confounding factors such as age, sex, body mass index, performance status, American Society of Anesthesiologists score, previous abdominal surgery, neoadjuvant chemotherapy, and preoperative high T stage (≥ cT3) and high N stage (≥ cN1). Perioperative complications were then compared among three groups: extracorporeal, intracorporeal, and hybrid urinary diversion (ECUD, ICUD, and HUD, respectively). RESULTS A total of 150, 68, and 155 patients received ECUD, HUD, and ICUD, respectively. Bowel reconstruction time and UD time were significantly shorter in the ECUD group (p < 0.001), and console time was significantly longer and blood loss was significantly higher in the ICUD group (p < 0.001). For postoperative complications (Clavien-Dindo Classification grade ≥ 3), surgical site infection (p = 0.004), pelvic abscess (p = 0.013), anastomotic urine leak (p = 0.007), and pelvic organ prolapse (p = 0.011) significantly occurred in the ECUD group. For all grades, ileus was more common in the HUD group, whereas anastomotic stricture was more common in the ECUD group compared with the other groups (p < 0.05). CONCLUSIONS Severe complications did not increase after HUD and ICUD compared with ECUD; however, console time tended to be longer and blood loss was slightly higher during RARC.
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Affiliation(s)
- Shuichi Morizane
- Division of Urology, Department of Surgery, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan.
| | - Keita Nakane
- Department of Urology, Gifu University Graduate School of Medicine, Yanagido, Gifu, Japan
| | - Toshiaki Tanaka
- Department of Urology, Sapporo Medical University School of Medicine, Chuo-ku, Sapporo, Japan
| | - Kenji Zennami
- Department of Urology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Kentaro Muraoka
- Department of Urology, School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Shin Ebara
- Department of Urology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
| | - Noriyoshi Miura
- Department of Urology, Ehime University Graduate School of Medicine, Matsuyama, Ehime, Japan
| | - Koichi Uemura
- Department of Urology, Yokohama Minami Kyousai Hospital, Yokohama, Japan
| | - Ryuta Sobu
- Department of Urology, Akita University Graduate School of Medicine, Akita, Japan
| | - Akio Hoshi
- Department of Urology, Faculty of Medicine and Graduate School of Comprehensive Human Science, University of Tsukuba, Ibaraki, Japan
| | - Rikiya Taoka
- Department of Urology, Faculty of Medicine, Kagawa University, Takamatsu, Kagawa, Japan
| | - Mikio Sugimoto
- Department of Urology, Faculty of Medicine, Kagawa University, Takamatsu, Kagawa, Japan
| | - Hisashi Noma
- Department of Data Science, The Institute of Statistical Mathematics, Tachikawa, Tokyo, Japan
| | - Hiroshi Sunada
- Advanced Medicine, Innovation and Clinical Research Center, Tottori University Hospital, Yonago, Tottori, Japan
| | - Hiroyuki Nishiyama
- Department of Urology, Faculty of Medicine and Graduate School of Comprehensive Human Science, University of Tsukuba, Ibaraki, Japan
| | - Tomonori Habuchi
- Department of Urology, Akita University Graduate School of Medicine, Akita, Japan
| | - Ichiro Ikeda
- Department of Urology, Yokohama Minami Kyousai Hospital, Yokohama, Japan
| | - Takashi Saika
- Department of Urology, Ehime University Graduate School of Medicine, Matsuyama, Ehime, Japan
| | - Kazuhide Makiyama
- Department of Urology, School of Medicine, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Ryoichi Shiroki
- Department of Urology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Naoya Masumori
- Department of Urology, Sapporo Medical University School of Medicine, Chuo-ku, Sapporo, Japan
| | - Takuya Koie
- Department of Urology, Gifu University Graduate School of Medicine, Yanagido, Gifu, Japan
| | - Atsushi Takenaka
- Division of Urology, Department of Surgery, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori, 683-8503, Japan
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Han JH, Ku JH. Robot-assisted radical cystectomy: Where we are in 2023. Investig Clin Urol 2023; 64:107-117. [PMID: 36882169 PMCID: PMC9995950 DOI: 10.4111/icu.20220384] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/08/2023] [Accepted: 02/01/2023] [Indexed: 03/02/2023] Open
Abstract
Open radical cystectomy (ORC) is associated with high rates of perioperative morbidity and mortality, owing to its extensive surgical nature and the high frequency of multiple co-morbidities among patients. As an alternative, robot-assisted radical cystectomy (RARC) has been increasingly adopted worldwide, being a reliable treatment option that utilizes minimally invasive surgery. Seventeen years have passed since the advent of the RARC, and comprehensive long-term follow-up data are now becoming available. The present review focuses on the current knowledge of RARC in 2023, and analyzes various aspects, including oncological outcomes, peri/post-operative complications, post-operative quality of life (QoL) change, and cost-effectiveness. Oncologically, RARC showed comparable oncological outcomes to ORC. With regard to complications, RARC was associated with lower estimated blood loss, lower intraoperative transfusion rates, shorter length of stay, lower risk of Clavien-Dindo grade III-V complications, and lower 90-day rehospitalization rates than ORC. In particular, RARC with intracorporeal urinary diversion (ICUD) performed by high-volume centers significantly reduced the risk of post-operative major complications. In terms of post-operative QoL, RARC with extracorporeal urinary diversion (ECUD) showed comparable results to ORC, while RARC with ICUD was superior in some respects. As the RARC implementation rate increases and the learning curve is overcome, more prospective studies and randomized controlled trials with large-scale patients are expected to be conducted in the future. Accordingly, sub-group analysis in various groups such as ECUD, ICUD, continent and non-continent urinary diversion, etc. is considered to be possible.
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Affiliation(s)
- Jang Hee Han
- Department of Urology, Seoul National University Hospital, Seoul, Korea
| | - Ja Hyeon Ku
- Department of Urology, Seoul National University Hospital, Seoul, Korea.,Department of Urology, Seoul National University College of Medicine, Seoul, Korea.
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Kim H, Jeong BC, Lee S, Ku JH, Kwon TG, Kim TH, Jeon SH, Lee SH, Nam JK, Kim W, Lee JY, Hong SH, Rha KH, Han WK, Ham WS, Lee YG, Lee YS, Park SY, Yoon YE, Kang SG, Kang SH, Oh JJ. Predicting factor analysis of postoperative complications after robot-assisted radical cystectomy: Multicenter KORARC database study. Int J Urol 2022; 29:939-946. [PMID: 35137466 DOI: 10.1111/iju.14815] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 01/20/2022] [Indexed: 01/10/2023]
Abstract
OBJECTIVES To evaluate postoperative complications following robot-assisted radical cystectomy in patients diagnosed with bladder cancer and reveal if there are predictors for postoperative complications. METHODS Prospectively collected medical records of 730 robot-assisted radical cystectomy patients between 2007/04 and 2019/05 in 13 tertiary referral centers were reviewed. Perioperative outcomes were compared between two groups by postoperative complications (complication vs non-complication). We assessed recurrence-free survival, cancer-specific survival, and overall survival between groups. Regression analyses were implemented to identify factors associated with postoperative complications. RESULTS Any total and high-grade complication (Clavien-Dindo grade ≥3) rates were 57.8% and 21.1%, respectively. Patients in complication group had significantly higher proportion of diabetes mellitus (P = 0.048), chronic kidney disease (P = 0.011), dyslipidemia (P < 0.001), longer operation time (P = 0.001), more estimated blood loss (P = 0.001), and larger intraoperative fluid volume (P < 0.001). There was a significant difference in cancer-specific survival (log-rank P = 0.038, median cancer-specific survival: both groups not reached). Dyslipidemia (odds ratio 2.59, P = 0.002) and intraoperative fluid volume (odds ratio 1.0002, P = 0.040) were significantly associated with high-grade postoperative complications. Diabetes mellitus (odds ratio 1.97, P = 0.028), chronic kidney disease (odds ratio 1.89, P = 0.046), dyslipidemia (odds ratio 5.94, P = 0.007), and intraoperative fluid volume (odds ratio 1.0002, P = 0.009) were significantly associated with any postoperative complications. CONCLUSIONS Patients with diabetes mellitus, chronic kidney disease, dyslipidemia, or a relatively large intraoperatively infused fluid volume are more likely to develop postoperative complications. Patients with postoperative complications might have a possibility of lower cancer-specific survival rate.
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Affiliation(s)
- Hwanik Kim
- Department of Urology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Byong Chang Jeong
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sangchul Lee
- Department of Urology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Ja Hyeon Ku
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
| | - Tae Gyun Kwon
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Tae-Hwan Kim
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Seung Hyun Jeon
- Department of Urology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Sang Hyub Lee
- Department of Urology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Jong Kil Nam
- Department of Urology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Wansuk Kim
- Department of Urology, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - Ji Youl Lee
- Department of Urology, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Sung Hoo Hong
- Department of Urology, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Koon Ho Rha
- Department of Urology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Woong Kyu Han
- Department of Urology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Won Sik Ham
- Department of Urology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Young Goo Lee
- Department of Urology, Hallym University Kangnam Sacred Heart Hospital, Hallym University School of Medicine, Seoul, Korea
| | - Yong Seong Lee
- Department of Urology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Sung Yul Park
- Department of Urology, Hanyang University College of Medicine, Seoul, Korea
| | - Young Eun Yoon
- Department of Urology, Hanyang University College of Medicine, Seoul, Korea
| | - Sung Gu Kang
- Department of Urology, Korea University College of Medicine, Seoul, Korea
| | - Seok Ho Kang
- Department of Urology, Korea University College of Medicine, Seoul, Korea
| | - Jong Jin Oh
- Department of Urology, Seoul National University Bundang Hospital, Seongnam, Korea.,Department of Urology, Seoul National University College of Medicine, Seoul, Korea
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