@scientificanimation: Kidney stones are hard mineral deposits that form in the urinary tract and can move like tiny pebbles through the body's plumbing. The big problem is blocking urine flow, which can cause severe pain, bleeding, nausea, vomiting, or blood in the urine.Smaller stones may pass on their own; larger ones can get stuck in the ureter and need treatment. Kidney Stones Removal Surgery 3D Animation (Ureterolithotripsy) #kidneystone #kidneystones #kidneystonesurgery #kidneystoneremoval #ureteroscopy