Fig. 4
From: CT-imaging features of renal epithelioid angiomyolipoma
A 41-year-old male with an incidentally discovered left-sided renal mass. Axial non-contrast image (a) demonstrates an exophytic mass with hypo-density arising from the posterior aspect of the left kidney. Contrast-enhanced CT images of arterial (b), venous (c), and delayed-phase (d) demonstrate progressive heterogeneous enhancement with enlarged blood vessels presented in the lesion