We report a case of angiomyolipoma of the liver with emphasis on the appearance at MRI after administration of ferumoxides. Post-contrast T1- and T2-weighted images showed a frank decrease of signal intensity in a rim on the margin of the tumor. This unusual finding was related to the presence of an increased number of CD68-positive histiocytic cells in the periphery of the lesion and in the adjacent liver parenchyma.
Ketelslegers, E., Van Beers, B., & Sempoux, C. (2000). Angiomyolipoma of the liver: ferumoxides-enhanced MR imaging. European Radiology : journal of the European Congress of Radiology, 10(9), 1401-1403. https://doi.org/10.1007/s003300000355 (Original work published 2000)