CASE 54 A 72-year-old man presents with a 1-month history of left lower quadrant pain. Axial and coronal images from a contrast-enhanced computed tomography (CT) scan demonstrate an exophytic, well-circumscribed enhancing mass in the upper pole of the left kidney (Fig. 54.1A,B), which was biopsied under CT guidance (Fig. 54.1C). Lipid-poor angiomyolipoma
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Background