Table 1 Renal artery aneurysm classification and management

Type 1

Saccular

Main renal artery or large segmental branches [17]

 Narrow neck

Neck opening <70%^a [27]

Intraaneurysmal coil embolisation [27, 45]

 Wide neck

Neck opening ≥70 % ^a [27]

BMS with intraaneurysmal coil embolisation [20, 27]

Stent grafting [45]

 Bifurcation

Located at bifurcation [20]

Y-shaped stent grafting [16]

Combination stent grafting and embolisation [12, 16]

Type 2

Fusiform

Main renal artery or proximal large segmental arteries [13, 16]

Surgical [15]

Covered stent grafting [16]

Type 3

Intralobar, intraparenchymal [16]

Embolisation of end arteries [16, 19]