Bozniack Classification was introduced in 1986 to classify renal cysts based on CT imaging. The attached video will help you to better understand this classification system. 00:00-00:48 Introduction of Bozniack's Classification 00:49-04:26 Classes I and II 04:27-06:17 Class IIF 06:18-07:49 Class III 07:49-09:13 Classes IV