2102 NATURAL HISTORY OF ASYMPTOMATIC RENAL STONES AND PREDICTION OF STONE-RELATED EVENTS

Abstract

You have accessJournal of UrologyStone Disease: Evaluation & Medical Management (I)1 Apr 20132102 NATURAL HISTORY OF ASYMPTOMATIC RENAL STONES AND PREDICTION OF STONE-RELATED EVENTS Won Tae Kim, Ho Won Kang, Wun-Jae Kim, Sang-Cheol Lee, Seok Joong Yun, Yong-June Kim, Tong-Wook Kim, Jeong Won Seo, In Chang Cho, Yun Sok Ha, and Isaac Kim Won Tae KimWon Tae Kim Cheongju, Korea, Republic of More articles by this author , Ho Won KangHo Won Kang Korea, Republic of More articles by this author , Wun-Jae KimWun-Jae Kim Cheongju, Korea, Republic of More articles by this author , Sang-Cheol LeeSang-Cheol Lee Cheongju, Korea, Republic of More articles by this author , Seok Joong YunSeok Joong Yun Cheongju, Korea, Republic of More articles by this author , Yong-June KimYong-June Kim Cheongju, Korea, Republic of More articles by this author , Tong-Wook KimTong-Wook Kim Cheongju, Korea, Republic of More articles by this author , Jeong Won SeoJeong Won Seo Daejeon, Korea, Republic of More articles by this author , In Chang ChoIn Chang Cho Seoul, Korea, Republic of More articles by this author , Yun Sok HaYun Sok Ha New Brunswick, NJ More articles by this author , and Isaac KimIsaac Kim New Brunswick, NJ More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2013.02.2011AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES The appropriate management for asymptomatic renal stones remains unclear. The natural history and progression rate of such stones were assessed. Clinical factors associated with an increased risk of stone-related events were identified. METHODS Medical records of 347 (201 male and 146 female) patients with asymptomatic renal stones were reviewed retrospectively. It was recommended that patients be followed up every 6 months. The mean follow-up period was 31 months (range 6 to 180). The patients were divided into two groups according to the development of stone-related events (spontaneous stone passage, flank pain, stone growth, or need for intervention during the follow-up period). RESULTS Spontaneous passage occurred in 101 (29.1%) patients. Half of the patients (n=161; 46.4%) did not have stone-related events. The remaining half (n=186; 53.6%) experienced stone-related events; 85 (24.5%) of the whole cohort required intervention, but only 4.6% needed surgical intervention. Patients with stone-related events were more likely to be younger (46.6± 12.7 vs. 49.3± 12.6 years, p=0.047), male, and have a stone history (p=0.017 and 0.014, respectively). Male gender significantly reduced the probability of being free of stone-related events (log rank test, p= 0.0135) and was an independent predictor of stone-related events [hazard ratio (HR), 1.521; 95% confidence interval (CI), 1.108?2.087; p = 0.009]. Fifty percent of patients had a symptom within 19 months of diagnosis. CONCLUSIONS Asymptomatic renal stones can be followed safely, but long-term follow-up is necessary. Patients with risk factors should be recommended to undergo periodic follow-up and early intervention. © 2013 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 189Issue 4SApril 2013Page: e862 Advertisement Copyright & Permissions© 2013 by American Urological Association Education and Research, Inc.MetricsAuthor Information Won Tae Kim Cheongju, Korea, Republic of More articles by this author Ho Won Kang Korea, Republic of More articles by this author Wun-Jae Kim Cheongju, Korea, Republic of More articles by this author Sang-Cheol Lee Cheongju, Korea, Republic of More articles by this author Seok Joong Yun Cheongju, Korea, Republic of More articles by this author Yong-June Kim Cheongju, Korea, Republic of More articles by this author Tong-Wook Kim Cheongju, Korea, Republic of More articles by this author Jeong Won Seo Daejeon, Korea, Republic of More articles by this author In Chang Cho Seoul, Korea, Republic of More articles by this author Yun Sok Ha New Brunswick, NJ More articles by this author Isaac Kim New Brunswick, NJ More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ...