Nephrographic-phase scans enabled greater lesion detection and better characterization of small renal masses than corticomedullary-phase scans. Nephrographic-phase scans should be obtained when only monophasic scanning is used to detect small renal masses.

Objective To evaluate the eÃcacy and safety of endo-Results All RAAs were occluded successfully. In two patients treated with NDCs there were minor compli-vascular occlusion of true renal artery aneurysms (RAAs) with conventional non-detachable microcoils cations, i.e. one subsegmental peripheral infarction and one misembolization, both without clinical symp-(NDCs) and Guglielmi detachable coils (GDCs). Patients and methods Over a 5-year period, 12 RAAs toms. In the group treated with GDCs there were no complications. Five of seven patients were clinically were treated by endovascular selective embolization. Four RAAs were occluded using NDCs and eight were improved, while two patients remained clinically unchanged. treated with GDCs. All coils were delivered through a microcatheter. Eight RAAs were located in the bifur-Conclusion Superselective endovascular treatment of RAAs with microcoils is a safe, eÃcient, and less cation of the main renal artery, two in the main renal artery and two were intrarenal. Before treatment, four invasive alternative to surgical treatment. The high flexibility and softness of the GDC and the controlled patients presented with hypertension, one associated with renal infarction and a second had flank pain due detachment enables a safer and more complete occlusion of RAA than current alternatives. to microembolization. Two other patients had renal infarction, associated with haematuria in one; one Keywords Renal artery, aneurysm, detachable microcoils, therapeutic blockade other patient also had haematuria and five patients were asymptomatic. All patients were followed using clinical and angiographic examinations after 6 months, 1 and 2 years. Accordingly, we report our technique and the results of

Objective  To evaluate the efficacy and safety of endovascular occlusion of true renal artery aneurysms (RAAs) with conventional non‐detachable microcoils (NDCs) and Guglielmi detachable coils (GDCs). Patients and methods  Over a 5‐year period, 12 RAAs were treated by endovascular selective embolization. Four RAAs were occluded using NDCs and eight were treated with GDCs. All coils were delivered through a microcatheter. Eight RAAs were located in the bifurcation of the main renal artery, two in the main renal artery and two were intrarenal. Before treatment, four patients presented with hypertension, one associated with renal infarction and a second had flank pain due to microembolization. Two other patients had renal infarction, associated with haematuria in one; one other patient also had haematuria and five patients were asymptomatic. All patients were followed using clinical and angiographic examinations after 6 months, 1 and 2 years. Results  All RAAs were occluded successfully. In two patients treated with NDCs there were minor complications, i.e. one subsegmental peripheral infarction and one misembolization, both without clinical symptoms. In the group treated with GDCs there were no complications. Five of seven patients were clinically improved, while two patients remained clinically unchanged. Conclusion  Superselective endovascular treatment of RAAs with microcoils is a safe, efficient, and less invasive alternative to surgical treatment. The high flexibility and softness of the GDC and the controlled detachment enables a safer and more complete occlusion of RAA than current alternatives.