Fig. 16From: Active surveillance of small renal massesBosniak IIIs (a, b) and IIIn (c) lesions. a Axial T2-weighted MR showing a multiseptated cystic renal lesion (arrow) and (b) axial T1 post-contrast MR of the same lesion showing septal enhancement (arrow) consistent with a Bosniak IIIs cyst. c Axial contrast-enhanced CT of a cystic renal mass with septae nodularity (arrow) considered to be a Bosniak IIIn cystBack to article page