Joseph Abrams1, Timothy W. Clark1,
Rahmin A. Rabenou2, Hersh Chandarana1
1Radiology, NYU Langone Medical Center,
New York, NY, United States; 2Nephrology, NYU Langone Medical
Center, New York, NY, United States
Transarterial
embolization prevents hemorrhage of renal angiomyolipoma (AML) by decreasing
the tumors angiogenic component. Our aim was to determine whether baseline
AML lipid content, as estimated by AML-to-psoas signal ratio on T1
fat-saturated non-contrast acquisition, could help predict embolization
response, as measured by changes in volume and enhancement on gadolinium
contrast enhanced MRI (CE-MRI). Moderately good correlations were seen
between baseline lipid content and change in volume and change in
enhancement. These results suggest that AMLs with higher fatty components, as
determined on MRI, are less likely to respond to embolization.