(a)
(b)
(c)
(d)
Figure 1: (a) Encircled intraoperative gross specimen of resected RCC containing isthmus. (b) Coronal CT image indicating RCC containing isthmus. (c) Catton of six major patterns of HSK vasculature. (d) Aberrant single infrarenal vascular supply of the isthmus of HSK with coils at the bifurcation.