Endoscopic Treatment of Studer's Orthotopic Neobladder Lithiasis

Abstract

Studer's neobladder lithiasis is a rare but important long term complication of this orthotopic bladder substitute technique. We report a case of a 45 year-old male patient, submitted to a radical cystoprostatectomy with a Studer's orthotopic neobladder 4 years before, presenting bad compliance to recommended urinary habits, increased production of mucus and high post voiding residue. CT scan and urethrocystography showed a distended pouch with 2 major sacculations with narrow communication and a stone in each sacculation. A minimally invasive endoscopic technique was successfully used in the treatment of the 2 small calculus.

Symptomatic Distal Ureteral Stone in an Ileal Ureter: Treatment by Combined Supine Ureteroscopy and Mini Percutaneous Nephrolithotomy

“…Contributing factors for developing stones in urinary diversion have not yet been completely understood and seem to be complex and multifactorial. 3 , 4 Regarding the literature, structural, metabolic, and infectious factors are mentioned. 1–4 Recently described risk factors of stone formation in patients with urinary diversion are urinary stasis because of a high postvoiding residual volume, urinary tract infections with urea splitting organisms, encrustation and stone formation on foreign bodies (e.g., ureteral stents and suture), excessive mucus production, or a chronic metabolic acidosis because of electrolyte imbalance.…”