Fig. 8
From: Assessment and characterisation of common renal masses with CT and MRI
Imaging presentation of angiomyolipoma (AML) in CT (upper and lower row) and MRI (middle row). On CT (upper row) lipid-containing AML shows bulk fat in the native (arrow in a) and moderate enhancement in the arterial (arrow in b), venous (arrow in c) and excretory phase (arrow in d). On MRI (middle row) another lipid-containing AML shows streaky signal alteration on in- and opposed-phase T1-weighted imaging (arrows in e and f), heterogeneous pattern with high signal intensity on TSE T2 (arrow in g), a moderate enhancement on T1 (arrow in h), and a clear signal loss on the T1-weighted image with fat saturation (arrow in i). On CT (lower row) a lipid-poor AML is not clearly distinguishable from other renal masses in the native (arrow in i) and venous phase (arrows in j and k)