Growth Kinetics and Progression Rate of Bosniak Classification Version 2019 Class III and IV Cystic Renal Masses on Imaging Surveillance
Active surveillance is increasingly used as first-line management for localized renal masses. Triggers for intervention primarily reflect growth kinetics, which have been poorly investigated for cystic masses defined by the Bosniak classification version 2019 (v2019). The purpose of this study was t...
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Veröffentlicht in: | American journal of roentgenology (1976) 2022-08, Vol.219 (2), p.244-253 |
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description | Active surveillance is increasingly used as first-line management for localized renal masses. Triggers for intervention primarily reflect growth kinetics, which have been poorly investigated for cystic masses defined by the Bosniak classification version 2019 (v2019).
The purpose of this study was to determine growth kinetics and incidence rates of progression of class III and IV cystic renal masses, as defined by the Bosniak classification v2019.
This retrospective study included 105 patients (68 men, 37 women; median age, 67 years) with 112 Bosniak v2019 class III or IV cystic renal masses on baseline renal mass protocol CT or MRI examinations performed from January 2005 to September 2021. Mass dimensions were measured. Progression was defined as any of the following: linear growth rate (LGR) of 5 mm/y or greater (representing the clinical guideline threshold for intervention), volume doubling time less than 1 year, T category increase, or N1 or M1 disease. Class III and IV masses were compared. Time to progression was estimated using Kaplan-Meier curve analysis.
At baseline, 58 masses were class III and 54 were class IV. Median follow-up was 403 days. Median LGR for class III masses was 0.0 mm/y (interquartile range [IQR], -1.3 to 1.8 mm/y) and for class IV masses was 2.3 mm/y (IQR, 0.0-5.7 mm/y) (
< .001). LGR was at least 5 mm/y in four (7%) class III masses and 15 (28%) class IV masses (
= .005). Two patients, both with class IV masses, developed distant metastases. Incidence rate of progression for class III masses was 11.0 (95% CI, 4.5-22.8) and for class IV masses 73.6 (95% CI, 47.8-108.7) per 100,000 person-days of follow-up. Median time to progression was undefined for class III masses given the small number of progression events and 710 days for class IV masses. Hazard ratio of progression for class IV relative to class III masses was 5.1 (95% CI, 2.5-10.8;
< .001).
During active surveillance of cystic masses evaluated using the Bosniak classification v2019, class IV masses grew faster and were more likely to progress than class III masses.
In comparison with current active surveillance guidelines that treat class III and IV masses similarly, future iterations may incorporate relatively more intensive surveillance for class IV masses. |
doi_str_mv | 10.2214/AJR.22.27400 |
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The purpose of this study was to determine growth kinetics and incidence rates of progression of class III and IV cystic renal masses, as defined by the Bosniak classification v2019.
This retrospective study included 105 patients (68 men, 37 women; median age, 67 years) with 112 Bosniak v2019 class III or IV cystic renal masses on baseline renal mass protocol CT or MRI examinations performed from January 2005 to September 2021. Mass dimensions were measured. Progression was defined as any of the following: linear growth rate (LGR) of 5 mm/y or greater (representing the clinical guideline threshold for intervention), volume doubling time less than 1 year, T category increase, or N1 or M1 disease. Class III and IV masses were compared. Time to progression was estimated using Kaplan-Meier curve analysis.
At baseline, 58 masses were class III and 54 were class IV. Median follow-up was 403 days. Median LGR for class III masses was 0.0 mm/y (interquartile range [IQR], -1.3 to 1.8 mm/y) and for class IV masses was 2.3 mm/y (IQR, 0.0-5.7 mm/y) (
< .001). LGR was at least 5 mm/y in four (7%) class III masses and 15 (28%) class IV masses (
= .005). Two patients, both with class IV masses, developed distant metastases. Incidence rate of progression for class III masses was 11.0 (95% CI, 4.5-22.8) and for class IV masses 73.6 (95% CI, 47.8-108.7) per 100,000 person-days of follow-up. Median time to progression was undefined for class III masses given the small number of progression events and 710 days for class IV masses. Hazard ratio of progression for class IV relative to class III masses was 5.1 (95% CI, 2.5-10.8;
< .001).
During active surveillance of cystic masses evaluated using the Bosniak classification v2019, class IV masses grew faster and were more likely to progress than class III masses.
In comparison with current active surveillance guidelines that treat class III and IV masses similarly, future iterations may incorporate relatively more intensive surveillance for class IV masses.</description><identifier>ISSN: 0361-803X</identifier><identifier>ISSN: 1546-3141</identifier><identifier>EISSN: 1546-3141</identifier><identifier>DOI: 10.2214/AJR.22.27400</identifier><identifier>PMID: 35293234</identifier><language>eng</language><publisher>United States</publisher><subject>Aged ; Female ; Humans ; Kidney - pathology ; Kidney Diseases, Cystic - diagnostic imaging ; Kidney Diseases, Cystic - pathology ; Kidney Neoplasms - diagnostic imaging ; Kidney Neoplasms - pathology ; Kinetics ; Male ; Retrospective Studies ; Tomography, X-Ray Computed - methods</subject><ispartof>American journal of roentgenology (1976), 2022-08, Vol.219 (2), p.244-253</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c221t-430aaee9e2f30a4ed4159fa828746a41ff0789f83dc5e7182b51cb8dd0541bd13</citedby><cites>FETCH-LOGICAL-c221t-430aaee9e2f30a4ed4159fa828746a41ff0789f83dc5e7182b51cb8dd0541bd13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,4120,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/35293234$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tse, Justin R</creatorcontrib><creatorcontrib>Shen, Luyao</creatorcontrib><creatorcontrib>Shen, Jody</creatorcontrib><creatorcontrib>Yoon, Luke</creatorcontrib><creatorcontrib>Chung, Benjamin I</creatorcontrib><creatorcontrib>Kamaya, Aya</creatorcontrib><title>Growth Kinetics and Progression Rate of Bosniak Classification Version 2019 Class III and IV Cystic Renal Masses on Imaging Surveillance</title><title>American journal of roentgenology (1976)</title><addtitle>AJR Am J Roentgenol</addtitle><description>Active surveillance is increasingly used as first-line management for localized renal masses. Triggers for intervention primarily reflect growth kinetics, which have been poorly investigated for cystic masses defined by the Bosniak classification version 2019 (v2019).
The purpose of this study was to determine growth kinetics and incidence rates of progression of class III and IV cystic renal masses, as defined by the Bosniak classification v2019.
This retrospective study included 105 patients (68 men, 37 women; median age, 67 years) with 112 Bosniak v2019 class III or IV cystic renal masses on baseline renal mass protocol CT or MRI examinations performed from January 2005 to September 2021. Mass dimensions were measured. Progression was defined as any of the following: linear growth rate (LGR) of 5 mm/y or greater (representing the clinical guideline threshold for intervention), volume doubling time less than 1 year, T category increase, or N1 or M1 disease. Class III and IV masses were compared. Time to progression was estimated using Kaplan-Meier curve analysis.
At baseline, 58 masses were class III and 54 were class IV. Median follow-up was 403 days. Median LGR for class III masses was 0.0 mm/y (interquartile range [IQR], -1.3 to 1.8 mm/y) and for class IV masses was 2.3 mm/y (IQR, 0.0-5.7 mm/y) (
< .001). LGR was at least 5 mm/y in four (7%) class III masses and 15 (28%) class IV masses (
= .005). Two patients, both with class IV masses, developed distant metastases. Incidence rate of progression for class III masses was 11.0 (95% CI, 4.5-22.8) and for class IV masses 73.6 (95% CI, 47.8-108.7) per 100,000 person-days of follow-up. Median time to progression was undefined for class III masses given the small number of progression events and 710 days for class IV masses. Hazard ratio of progression for class IV relative to class III masses was 5.1 (95% CI, 2.5-10.8;
< .001).
During active surveillance of cystic masses evaluated using the Bosniak classification v2019, class IV masses grew faster and were more likely to progress than class III masses.
In comparison with current active surveillance guidelines that treat class III and IV masses similarly, future iterations may incorporate relatively more intensive surveillance for class IV masses.</description><subject>Aged</subject><subject>Female</subject><subject>Humans</subject><subject>Kidney - pathology</subject><subject>Kidney Diseases, Cystic - diagnostic imaging</subject><subject>Kidney Diseases, Cystic - pathology</subject><subject>Kidney Neoplasms - diagnostic imaging</subject><subject>Kidney Neoplasms - pathology</subject><subject>Kinetics</subject><subject>Male</subject><subject>Retrospective Studies</subject><subject>Tomography, X-Ray Computed - methods</subject><issn>0361-803X</issn><issn>1546-3141</issn><issn>1546-3141</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kMlOwzAURS0EoqWwY428ZEGKp0zLEkEJFIEKVOwiJ3kuhgzFTkH9Az4btwVWvtI9uvI7CB1TMmSMivPRzdSFIQsFITuoT30ReJwKuov6hAfUiwh_6aEDa98IIWEUh_uox30Wc8ZFH32PTfvVveJb3UCnC4tlU-IH084NWKvbBk9lB7hV-KK1jZbvOKmkK5QuZLeuZ2A2GCM03nY4TdPNSjrDycq6UTyFRlb4zpVgsYPTWs51M8ePS_MJuqpkU8Ah2lOysnD0-w7Q89XlU3LtTe7HaTKaeIW7tvMEJ1ICxMCUSwJKQf1YyYhFoQikoEqtb1QRLwsfQhqx3KdFHpUl8QXNS8oH6HS7uzDtxxJsl9XaFrD-BLRLm7HAeRR-TAKHnm3RwrTWGlDZwuhamlVGSbZ2nzn3LmQb9w4_-V1e5jWU__CfbP4DlIR-2Q</recordid><startdate>202208</startdate><enddate>202208</enddate><creator>Tse, Justin R</creator><creator>Shen, Luyao</creator><creator>Shen, Jody</creator><creator>Yoon, Luke</creator><creator>Chung, Benjamin I</creator><creator>Kamaya, Aya</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202208</creationdate><title>Growth Kinetics and Progression Rate of Bosniak Classification Version 2019 Class III and IV Cystic Renal Masses on Imaging Surveillance</title><author>Tse, Justin R ; Shen, Luyao ; Shen, Jody ; Yoon, Luke ; Chung, Benjamin I ; Kamaya, Aya</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c221t-430aaee9e2f30a4ed4159fa828746a41ff0789f83dc5e7182b51cb8dd0541bd13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Aged</topic><topic>Female</topic><topic>Humans</topic><topic>Kidney - pathology</topic><topic>Kidney Diseases, Cystic - diagnostic imaging</topic><topic>Kidney Diseases, Cystic - pathology</topic><topic>Kidney Neoplasms - diagnostic imaging</topic><topic>Kidney Neoplasms - pathology</topic><topic>Kinetics</topic><topic>Male</topic><topic>Retrospective Studies</topic><topic>Tomography, X-Ray Computed - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tse, Justin R</creatorcontrib><creatorcontrib>Shen, Luyao</creatorcontrib><creatorcontrib>Shen, Jody</creatorcontrib><creatorcontrib>Yoon, Luke</creatorcontrib><creatorcontrib>Chung, Benjamin I</creatorcontrib><creatorcontrib>Kamaya, Aya</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>American journal of roentgenology (1976)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tse, Justin R</au><au>Shen, Luyao</au><au>Shen, Jody</au><au>Yoon, Luke</au><au>Chung, Benjamin I</au><au>Kamaya, Aya</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Growth Kinetics and Progression Rate of Bosniak Classification Version 2019 Class III and IV Cystic Renal Masses on Imaging Surveillance</atitle><jtitle>American journal of roentgenology (1976)</jtitle><addtitle>AJR Am J Roentgenol</addtitle><date>2022-08</date><risdate>2022</risdate><volume>219</volume><issue>2</issue><spage>244</spage><epage>253</epage><pages>244-253</pages><issn>0361-803X</issn><issn>1546-3141</issn><eissn>1546-3141</eissn><abstract>Active surveillance is increasingly used as first-line management for localized renal masses. Triggers for intervention primarily reflect growth kinetics, which have been poorly investigated for cystic masses defined by the Bosniak classification version 2019 (v2019).
The purpose of this study was to determine growth kinetics and incidence rates of progression of class III and IV cystic renal masses, as defined by the Bosniak classification v2019.
This retrospective study included 105 patients (68 men, 37 women; median age, 67 years) with 112 Bosniak v2019 class III or IV cystic renal masses on baseline renal mass protocol CT or MRI examinations performed from January 2005 to September 2021. Mass dimensions were measured. Progression was defined as any of the following: linear growth rate (LGR) of 5 mm/y or greater (representing the clinical guideline threshold for intervention), volume doubling time less than 1 year, T category increase, or N1 or M1 disease. Class III and IV masses were compared. Time to progression was estimated using Kaplan-Meier curve analysis.
At baseline, 58 masses were class III and 54 were class IV. Median follow-up was 403 days. Median LGR for class III masses was 0.0 mm/y (interquartile range [IQR], -1.3 to 1.8 mm/y) and for class IV masses was 2.3 mm/y (IQR, 0.0-5.7 mm/y) (
< .001). LGR was at least 5 mm/y in four (7%) class III masses and 15 (28%) class IV masses (
= .005). Two patients, both with class IV masses, developed distant metastases. Incidence rate of progression for class III masses was 11.0 (95% CI, 4.5-22.8) and for class IV masses 73.6 (95% CI, 47.8-108.7) per 100,000 person-days of follow-up. Median time to progression was undefined for class III masses given the small number of progression events and 710 days for class IV masses. Hazard ratio of progression for class IV relative to class III masses was 5.1 (95% CI, 2.5-10.8;
< .001).
During active surveillance of cystic masses evaluated using the Bosniak classification v2019, class IV masses grew faster and were more likely to progress than class III masses.
In comparison with current active surveillance guidelines that treat class III and IV masses similarly, future iterations may incorporate relatively more intensive surveillance for class IV masses.</abstract><cop>United States</cop><pmid>35293234</pmid><doi>10.2214/AJR.22.27400</doi><tpages>10</tpages></addata></record> |
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source | American Roentgen Ray Society; MEDLINE; Alma/SFX Local Collection |
subjects | Aged Female Humans Kidney - pathology Kidney Diseases, Cystic - diagnostic imaging Kidney Diseases, Cystic - pathology Kidney Neoplasms - diagnostic imaging Kidney Neoplasms - pathology Kinetics Male Retrospective Studies Tomography, X-Ray Computed - methods |
title | Growth Kinetics and Progression Rate of Bosniak Classification Version 2019 Class III and IV Cystic Renal Masses on Imaging Surveillance |
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