TY - JOUR
T1 - Bosniak classification of cystic renal masses, version 2019
T2 - A pictorial guide to clinical use
AU - Schieda, Nicola
AU - Davenport, Matthew S.
AU - Krishna, Satheesh
AU - Edney, Elizabeth A.
AU - Pedrosa, Ivan
AU - Hindman, Nicole
AU - Baroni, Ronaldo H.
AU - Curci, Nicole E.
AU - Shinagare, Atul
AU - Silverman, Stuart G.
N1 - Publisher Copyright:
© RSNA, 2021.
PY - 2021
Y1 - 2021
N2 - Cystic renal masses are commonly encountered in clinical prac-tice. In 2019, the Bosniak classification of cystic renal masses, originally developed for CT, underwent a major revision to incorporate MRI and is referred to as the Bosniak Classification, version 2019. The proposed changes attempt to (a) define renal masses (ie, cystic tumors with less than 25% enhancing tissue) to which the classification should be applied; (b) emphasize specific-ity for diagnosis of cystic renal cancers, thereby decreasing the number of benign and indolent cystic masses that are unnecessar-ily treated or imaged further; (c) improve interobserver agreement by defining imaging features, terms, and classes of cystic renal masses; (d) reduce variation in reported malignancy rates for each of the Bosniak classes; (e) incorporate MRI and to some extent US; and (f) be applicable to all cystic renal masses encountered in clinical practice, including those that had been considered in-determinate with the original classification. The authors instruct how, using CT, MRI, and to some extent US, the revised classification can be applied, with representative clinical examples and images. Practical tips, pitfalls to avoid, and decision tree rules are included to help radiologists and other physicians apply the Bosniak Classification, version 2019 and better manage cystic renal masses. An online resource and mobile application are also available for clinical assistance.
AB - Cystic renal masses are commonly encountered in clinical prac-tice. In 2019, the Bosniak classification of cystic renal masses, originally developed for CT, underwent a major revision to incorporate MRI and is referred to as the Bosniak Classification, version 2019. The proposed changes attempt to (a) define renal masses (ie, cystic tumors with less than 25% enhancing tissue) to which the classification should be applied; (b) emphasize specific-ity for diagnosis of cystic renal cancers, thereby decreasing the number of benign and indolent cystic masses that are unnecessar-ily treated or imaged further; (c) improve interobserver agreement by defining imaging features, terms, and classes of cystic renal masses; (d) reduce variation in reported malignancy rates for each of the Bosniak classes; (e) incorporate MRI and to some extent US; and (f) be applicable to all cystic renal masses encountered in clinical practice, including those that had been considered in-determinate with the original classification. The authors instruct how, using CT, MRI, and to some extent US, the revised classification can be applied, with representative clinical examples and images. Practical tips, pitfalls to avoid, and decision tree rules are included to help radiologists and other physicians apply the Bosniak Classification, version 2019 and better manage cystic renal masses. An online resource and mobile application are also available for clinical assistance.
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U2 - 10.1148/rg.2021200160
DO - 10.1148/rg.2021200160
M3 - Article
C2 - 33861647
AN - SCOPUS:85105384786
SN - 0271-5333
VL - 41
SP - 814
EP - 828
JO - Radiographics
JF - Radiographics
IS - 3
ER -