What does a stuck kidney stone look like?

White: At x-rays and ct, the vast majority of kidney stones are white on the images produced because they attenuate x-rays. Often, the secondary affects of the obstructing stones can be visualized at ct as well, such as hydroureter, hydronephrosis, unilateral nephromegaly and renal edema.

Gross Exam: The stuck stone can look brownish due to old blood or clot coating its surface in the area where it is lodged, but on scrubbing, it looks light tan with powdery surface and may have glistening inner core. They are mostly calcium carbonate or oxalate in chemical composition.