DefinitionBladder stones are hard buildups of minerals that form in the urinary bladder.Alternative NamesStones - bladder; Urinary tract stones; Bladder calculiCauses, incidence, and risk factorsBladder stones are usually the result of another urologic problem, such as:Bladder diverticulumEnlarged prostateNeurogenic bladderUrinary tract infectionApproximately 95% of all bladder stones occur in men. Bladder stones are much less common than kidney stones.Bladder stones may occur when urine in the bladder is concentrated and materials crystallize. Bladder stones may also result from foreign objects in the bladder.SymptomsSymptoms occur when the stone irritates the lining of the bladder or obstructs the flow of urine from the bladder. Symptoms can include:Abdominal pain, pressureAbnormally col