Submucosal renal pelvic calcification simulating a pelvic stone

We report a case of renal pelvic calcification radiologically simulating a renal pelvic calculus. Radiological and histopathological examination of the resected kidney revealed only submucosal calcification in the renal pelvis. This is the first report in the English literature of a renal pelvic calcification unrelated to amyloidosis.