Rahul Dev, Udit Chauhan, Khanak K. Nandolia
Introduction: Renal 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 methods: The CT report archives were searched for the keyword 'Bosniak' lesions, and six illustrative cases were selected to be included in the review.
Results: Six cases under Bosniak categories I to IV were included in the review. Operative follow-ups were added in cases where patients underwent surgery.
Discussion: We 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.
Conclusion: The 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.