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Angiographic analysis of patient 3 angiomyolipomas. A: At the time of the patient’s first embolization, initial angiography demonstrated low overall tumoral vasculature (grade 1); B: The second embolization, however, revealed interval significant expansion of tumor vascularity including development of multiple aneurysms (grade 3); C: Following a course of mTOR inhibitor, tumor vascularity was reduced to grade 1 at the third embolization. mTOR: Mammalian target of rapamycin.
