Multifaceted Imaging of Renal Lesions With an Emphasis on Cross-Sectional Imaging

Abstract

IntroductionRenal lesions are common findings encountered in cross-sectional imaging. Ultrasonography (USG), computed tomography (CT), and magnetic resonance imaging (MRI) are available modalities for evaluating renal lesions. The Bosniak classification system aids in classifying a renal lesion into a particular category based on various imaging characteristics on contrast-enhanced CT (CECT). Materials and methodsThe CT report archives were searched for the keyword 'Bosniak' lesions, and six illustrative cases were selected to be included in the review. ResultsSix cases under Bosniak categories I to IV were included in the review. Operative follow-ups were added in cases where patients underwent surgery. DiscussionWe have reviewed the imaging features of various renal lesions with cross-sectional modalities, namely CT and MRI, with special emphasis on the Bosniak classification system, including its amendments. ConclusionThe Bosniak system is widely used to classify and characterize renal lesions. The authors have presented a scoping review of the features of renal lesions and the Bosniak system.