Renal pelvic calculus and pyelitis cystica
Macrohaematuria, right flank pain.
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The right renal pelvis containing the calculus shows a thickened wall with unsharp delineation from the surrounding fat tissue. In some sections, there are small bubbly, centrally hypodense structures in the renal pelvic wall. Urothelial malignancy could not be excluded.
Pyelitis or ureteritis cystica is not a typical imaging diagnosis. In this case, it was confirmed with ureterorenoscopy.