How is ureter work?

Ureters are ducts/tubes that drain the kidneys into the urinary bladder. They have small, intermittent muscular contractions that gently squeeze urine and/or stones down into the bladder.

If a uric acid crystal/stone is present, the patient will present with pain in the low back or groin pain on the affected side. There may also be hematuria (blood in the urine) as the stone cuts the inside of the ureter as it travels down.

Immediate medical care is needed as infection is likely.