Polycystic Kidney Disease

P OLYCYSTIC kidney disease represents a group of conditions that are banded together because of certain pathologic similarities but are a collection of different entities that have diverse clinical and radiologic presentations. In this article we will follow the Elkin and Bernstein classification12 (Table 4 of Dr. Elkin’s article on page 101 of this Seminar) and discuss polycystic disease of the young (infantile polycystic kidney disease), including the newborn and childhood forms, and adult polycystic disease in sequence.