Medullary Sponge Kidney
Section Editor: Dharam M. Ramnani, MD
Virginia Urology, Richmond, VA, USA
Image Description
Microscopic Features: Microscopically, the cysts communicate with the collecting tubules and are lined by simple cuboidal or flattened epithelium. Intratubular microliths are often present. The interstitium shows chronic inflammation and fibrosis. In patients with numerous stones or bouts of pyelonephritis, renal cortical scarring may be seen. Image copyright: pathorama.ch