PMC3350261_01
Axial CT image demonstrated an incidental retroperitoneal mass on the right side with minimal heterogenous contrast enhancement.
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fig1
During CT evaluation, a round shaped soft-tissue mass 4.5 x 3.5 cm in diameter, with minimal heterogeneous contrast enhancement at the retroperitoneal area inferior to the right kidney, was detected (Figure 1).
The retroperitoneal mass is hypointense on T1W (a) and heterogeneously hyperintense on T2W (b) MRI images.
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fig2
Tesla scanner (Philips Intera Achieva, Best, NL) with Torso coil. The lesion was located just anterior to the iliopsoas muscle and inferior to the right kidney, was hypointense on T1 and heterogeneously hyperintense on T2 weighted images with moderate heterogenous contrast enhancement (Figures 2(a) and 2(b)).
Resected 5 x 6 x 5 cm in diameters mass.
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fig3
The mass was localized just above the right psoas muscle, lateral to the vena cava inferior and inferior to the right kidney, and also showed a close proximity to nerves ilioinguinalis and femorolateralis, and the mass was resected (Figure 3).
H&E, x40; Antoni B areas characterized with less cellular, loosely textured Schwann cells.
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fig4
Histopathologic examination of the lesion revealed a tumor composed of two different patterns characterized with cellular compact areas and loosely textured less cellular areas (Figure 4).