Another reason why I always say YES when asked if ultrasound might be helpful for a case. Some types of kidney stones don’t show up on x-rays. This 3 year old Yorkie Terrier had a low platelet count and lab work changes suggestive of a congenital liver shunt. Ultrasound confirmed a small liver shunt. A stone obstructing the right ureter was also identified. I’ve never passed a kidney stone but I know this must have been super painful!