[Treatment of intradiverticular pyelocaliceal stones]

Nine patients with symptomatic intradiverticular stones have been treated, 3 by open surgery (excluded cavity and abscess formation) and 6 by endoscopy. When possible (4 cases), direct puncture of the diverticular cavity seems to be much simpler and more effective than indirect intrarenal access. The percutaneous approach constitutes a valuable alternative to open surgery in the treatment of symptomatic intra-diverticular stones, although secondary obliteration of the cavity is not always obtained, which leaves a potential risk of long term recurrent stones.