<s>[INST] CT SCAN REPORT shows two small stones in the right kidney but no pelvecaliectasis. The size of the stone is more or less 0.3cm. There is 0.9x0.5x0.4cm calcified right distal 3rd ureteral stone. There is 0.3cm calcified left distal ureteral stone. The urinary bladder fails to show any stone within. Both kidneys are normal in size and density with normal cortical thickness. How serious is my condition? [/INST] Welcome to Chat Doctor. Stones in the kidneys occur due to malfunction of the metabolism of calcium/oxalate/pyruvate or other similar substances. It would help if the stones are removed and analyzed for its chemical composition. The correction of the pathway of the offending substance and its avoidance in diet may prevent recurrent stone formation. A cystoscope ureteroscopy and basket removal of the distal stone and a PCNL removal for the kidney stones would help avoid open surgery. The use of a double J stent may help remove such small stones. </s>