Abstract
Bladder lithiasis is common in developing countries. It has become rare in industrialized countries and exceptional in the absence of associated lower tract pathology. usually caused by urinary tract infections, urethral obstruction or the presence of intravesical foreign bodies. Open cystolithotomy was performed on a 45-year-old patient with lower abdominal pain, moderate dysuria, pollakiuria, nocturia, and hematuria for a long time. A stone of 12 × 8cm in size and approximately 620 grams in weight was removed. The cystoscopy was performed without any infravesical obstruction during the operation. The stone analysis showed 21% struvite and 79% carbonate apatite. Bladder lithiasis is common in Morocco. However, giant lithiasis is rare and is the consequence of neglected voiding disorders. Open cystolithotomy remains the most treatment in the management of giant stones.