<prompt> IOC for ureteric stone with acute colic: March 2013USGX-ray KUBContrast CTNon contrast CT  <response>: Ans. D i.e. Non contrast CT Renal calculi MC stones: Calcium stones 75-85 Radiolucent stones: Uric acid Stones MC in men: Calcium Renal calculi overlies spine in lateral view Deitels crisis: - Renal colic, - Swelling in loin - Disappearance of swelling with micturation Pain in ureteric calculi is due to ureteric peristalsis Stones MC in females: Struvite stones Stones MC in UTI with urease producing bacteria proteus spp.: Struvite stones Stone which grows in alkaline urine: Struvite stones Stone which grow in infected urine: Struvite stone Stone hard to break in ESWL: Cysteine stones 