Fig. 1
From: A case of flank pain caused by ureteral intussusception accompanied with ureteral polyp
Computed tomography and intravenous urogram findings (a) Computed tomography shows an enlargement in the inferior part of the right ureter with a suspected solid mass; (b) Intravenous urogram shows a “sponge-like” filling defect in the right distal dilated ureteral lumen (black arrow) without dilation of the upper urinary tract and renal pelvis (white arrow), and an oval-shaped filling defect of the ureteral orifice inside the bladder