PMC4900112_01
63-year-old female with AML. Transabdominal ultrasound of the liver shows a hyperechoic lesion in the liver (arrow).
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This revealed a well-defined hyperechoic lesion in the liver (Fig. 1), considered to be unrelated to presenting symptoms.
63-year-old female with AML. Axial precontrast CT of abdomen shows a low-attenuation liver lesion (black arrow) with an average of -26 HU. The left adrenal gland demonstrates a 1.7-cm nodule (white arrow) with an average of 14 HU.
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On the precontrast CT images (Fig. 2), the lesion was of low attenuation, with an average of -26 Hounsfield units (HU), suggestive of fat.
63-year-old female with AML. Axial postcontrast CT of abdomen in the arterial phase shows heterogeneous contrast enhancement of the liver lesion (black arrow). The left adrenal lesion (white arrow) enhances to 40 HU.
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The lesion also demonstrated contrast enhancement on the postcontrast arterial phase (Fig. 3) and early washout on the portal venous phase (Fig. 4).
63-year-old female with AML. Axial MRI of abdomen, In-phase (A) and out-of-phase (B) gradient images show signal dropout, confirming the presence of fat in the liver lesion (black arrows). In addition, the images show some fat content within the left adrenal lesion (white arrows) with signal dropout anteriorly and on the right, suggestive of an adenoma.
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T1-weighted gradient imaging (Fig. 5). The postcontrast MRI images also demonstrated an enhancement pattern similar to that seen by CT.
63-year-old female with AML. Histology specimen shows features of AML with the characteristic combination of smooth muscle, fat, and blood vessels.
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Histology showed an epitheloid tumor containing a combination of smooth muscle, fat, and blood vessels (Fig. 6).