Kidney stones (or renal calculi) are stones that form in the urinary tract. This is the result of minerals in the urine crystallizing and depositing in the kidneys, forming stones over time. Kidney stones may have no symptoms and pass on their own. However, large stones can cause blockages, causing terrible renal colic.

Kidney stones often have clinical manifestations such as back pain, pain in the lower ribs, pain when urinating, the patient may have frequent urination, urinary incontinence, even blood in the urine,... However, the above symptoms can also occur in other diseases. Therefore, it is impossible to rely solely on clinical symptoms to diagnose kidney stones, but it is necessary to conduct an examination and perform paraclinical tests for kidney stones to detect kidney stones.