The left kidney has a 0.7×0.7 stone, the size of the stone should be 0.7×0.7cm, if it is stuck in the renal pelvic ureteral junction may lead to the left side of the back pain and occult blood; if it is located in the calyx of the kidney there will be no discomfort symptoms.
If there is a 0.7×0.7mm stone in the left kidney, the size of the stone is small, and it cannot be detected by imaging. It will not cause left-sided back pain and occult blood.
If there is a 0.7×0.7cm stone in the left kidney, the size of the stone is slightly larger, and it is likely to cause left-sided back pain with occult blood. Once you have the symptom of left-sided back pain with occult blood, your kidney may have accumulated water, and you need to go to the hospital in time to see if you need extracorporeal lithotripsy.
Therefore, it is better to go to the hospital in time to deal with kidney stones, so as to avoid long-term fluid accumulation in the kidneys, causing kidney damage.