The topic of renal cystic lesions is described in the article. The localization and structure of solitary, parapelvic and multiple sinus cysts are discussed. The Bosniak classification (1986) is presented, as well as the updated Bosniak classification, in which a number of modifications in 2019 were made. The contemporary diagnostic methods are mentioned, as well as factors that allow to select patient for active surveillance. Current surgical procedures are presented.
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Acta Radiol
January 2025
Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA.
Background: The Bosniak classification is designed to standardize evaluation of cystic renal masses and to communicate the risk of malignancy.
Purpose: To determine whether radiologists vary in their communication of Bosniak class III and IV cystic renal masses.
Material And Methods: This retrospective study included 186 patients with CT or MRI reporting a Bosniak class III or IV mass.
AJR Am J Roentgenol
January 2025
Associate Professor, University of Ottawa Department of Radiology. Clinical Epidemiology Program, Ottawa Hospital Research Institute. Room c159 Ottawa Hospital Civic Campus, 1053 Carling Ave. Ottawa, ON, K1Y 4E9.
Bosniak classification version 2019 (v2019) was a major revision to version 2005 (v2005) that defined cystic renal mass subclasses based on wall or septa features. To determine the proportion of malignancy within cystic renal masses stratified by Bosniak classification v2019 class and feature-based subclass. MEDLINE and EMBASE databases were searched on July 24, 2023 for studies published in 2019 or later that reported cystic renal masses that underwent renal-mass CT or MRI, were assessed using Bosniak v2019, and had a reference standard (histopathology indicating benignity or malignancy or ≥5-year imaging follow-up indicating benignity).
View Article and Find Full Text PDFAbdom Radiol (NY)
December 2024
Department of Ultrasound, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
Objective: The 2019 Bosniak classification has improved the precise and detailed quantitative evaluation criteria, making the diagnosis of cystic renal masses (CRMs) more accurate and objective. This study addresses the clinical value of quantitative analysis and aims to investigate the feasibility of combining contrast-enhanced ultrasound (CEUS) with quantitative analysis for diagnosing Bosniak ≥ II CRMs.
Methods: We retrospectively obtained 58 CRMs with confirmed pathology, which underwent CEUS and Contrast-enhanced computer tomography (CECT) evaluations according to Bosniak classification between January 2013 and August 2024.
BMC Cancer
December 2024
Department of Urology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing, 100191, P.R. China.
Rationale And Objectives: The management of complex renal cysts is guided by the Bosniak classification system, which may be inadequate for risk stratification of patients to determine the appropriate intervention. Radiomics models based on CT imaging may provide additional useful information.
Materials And Methods: A total of 322 patients with Bosniak II-IV cysts were included in the study from January 2010 to December 2019.
Insights Imaging
November 2024
Department of Medical Ultrasonics, Institute of Diagnostic and Interventional Ultrasound, The First Affiliated Hospital of Sun Yat-Sen University, No.58 Zhongshan Road 2, Guangzhou, 510080, People's Republic of China.
Background: The contrast-enhanced US (CEUS) Bosniak classification, proposed by the European Federation for Ultrasound in Medicine and Biology (EFSUMB) in 2020, predicts malignancy in cystic renal masses (CRMs). However, intra- and inter-rater reproducibility for CEUS features has not been well investigated.
Purpose: To explore intra- and inter-rater agreement for US features, identify confounding features, and assess the diagnostic performance of CEUS Bosniak classification.
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