Abstract #4293

Bosniak II-III Cystic Renal Masses: Subtraction MR Images for Improvement of Interobserver Agreement with Bosniak Classification, Version 2019

Huanhuan Kang¹, Xu Bai², Wei Xu¹, Mengqiu Cui¹, Shaopeng Zhou¹, Baichuan Liu¹, and Haiyi Wang¹

¹Radiology, the First Medical Center of Chinese PLA General Hospital, Beijing, China, ²Radiology, the Fifth Medical Center of Chinese PLA General Hospital, Beijing, China

Synopsis

The purpose of this study was to investigate whether subtraction MR images can improve the interobserver agreement for Bosniak II, IIF and III cystic renal masses (CRMs) with Bosniak classification, version 2019. The results showed that the interobserver agreement was higher with subtraction MR images than without subtraction MR images (weighted k = 0.73 vs 0.60, respectively; P=.011), which may contribute to the popularization and application of Bosniak classification, version 2019.

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