Fig. 3

Patient 2. 42 years old man with double renal artery and urinary stones causing left pielectasia, treated with nephrostomy; this patient suffered from neonatal hypoxia with consequent tetraparesis, so the only vascular access available was right humeral artery. a prenephrostomy CT scan in coronal reconstruction showing severe ectasia of the pelvis and ureter (black asterisks); b postnephrostomy CT scan in arterial phase showing a pseudoaneurysm adjacent to the nephrostomic drainage (black circle); c DSA performed from the cranial renal artery showing no angiographic bleeding signs; d DSA performed from the caudal renal artery showing three pseudoaneurysms (black circle) from the interlobar branch of the inferior segmental artery; e selective embolization with MVP 5Q (white arrows indicate distal and proximal radiopaque markers of the MVP, black arrow indicates the 5Fr diagnostic Cobra 1 catheter); f final DSA control showing no more angiographic bleeding (black shadow indicates the ischemic area, white arrows indicate distal and proximal radiopaque markers of the MVP)