Magnetic resonance imaging features of minimal-fat angiomyolipoma and causes of preoperative misdiagnosis

Figure 1 Intratumoral vasculature was not observed in eight cases but was visible in the other two. A: An oval, homogeneous, and short T2 signal was found in the right kidney, showing a surrounding capsule. The lesion in the left kidney was pathologically confirmed as renal clear cell carcinoma; B and C: A mass in the renal parenchyma of the left kidney showed decreased signal intensity on opposed-phase MRI, indicating lipid composition; D: An oval, short T2 signal was found in the left kidney, showing a surrounding capsule; E and F: The round-like tumor in the left kidney showed heterogeneous and significant enhancement in cortico-medullary phase and decreased signal intensity(washout) of tumor in the excretory phase.