Formed in the bladder due to the ingestion of bacteria, mucus, foreign bodies in the urethra or descended sand and kidney stones along the ureter. The favorable moment is octal urine in the bladder itself, as well as adhering infection. Most often these are phosphate, urate, and oxalate stones of various sizes.
Patients note pain, frequent urge to urinate, pain at the end of urination, blood in the urine. In the diagnosis helps X-ray examination and dystoscopy.
Treatment consists, as a rule, of crushing stones; bladder dissection is less often used.