PMC3364093_01
Abdominal CT and MRI. Abdominal CT showed a 7.0 cm mass at either the posterior segment of the liver or the right adrenal gland. The peripheral part was heterogeneously enhanced in the arterial phase (a) and the portal phase (b). In gadolinium chelate-enhanced T1-weighted MRI image, the lesion appeared almost hypointense (c). T2-weighted MRI revealed some partially hyperintense rims around the mass (d).
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F1
The peripheral region was slightly enhanced and the central part was hypovascular, indicating central necrosis (fig. 1a, b). On magnetic resonance imaging (MRI), the mass appeared grossly hypointense on gadolinium chelate-enhanced T1-weighted image (fig. 1c) and marginally hyperintense on T2-weighted image (fig. 1d).
Abdominal angiography. The feeding vessels included branches from the right inferior adrenal artery (a) and the right superior adrenal artery (b).
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F2
On abdominal angiography, the mass showed arterial enhancement and a CT filling defect in the right superior and inferior adrenal arteries and arterial portography, respectively (fig. 2).
Gross appearance and histopathology. The cut surface of the resected specimen revealed a well-defined dark red and white solid mass. The weight of the mass was 120 g (a). It was composed of hemorrhage, necrosis, hemosiderin deposits and normal adrenal tissue without any neoplastic lesions (hematoxylin-eosin stains, x100) (b).
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F3
The resected specimen was 7.0 x 5.5 cm in size, and the cut surface of the mass was heterogeneous and dark red and white in appearance (fig. 3).