PMC3095240_01
(a) CT film showing large mass displacing small bowel to the right. The mass measured 12.8 x 13 x 12.5 cm arising from the retroperitoneum and was displacing the 3rd and 4th portions of the duodenum to the right. (b) EUS image of large hypoechoic mass adjacent to the gastric wall, measuring 9.6 x 7.4 cm. The distal aspect of the mass was beyond the reach of the ultrasound probe.
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fig1
Computerized tomography (CT)-scan of the abdomen revealed a 12.8 x 13 x 12.5 cm cystic and solid mass displacing the third and fourth portions of the duodenum to the right (Figure 1(a)). EUS was performed which revealed a large hypoechoic mass, with internal anechoic areas and well-demarcated borders adjacent to the gastric wall (Figure 1(b)).
Immunostains performed on cell block material displaying immunoreactivity of tumor cells with CD 99 (a), CD 117 (b), and synaptophysin (c).
DTE2011-198029.002.jpg
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fig2
Immunostaining of cell block material revealed immunoreactivity for CD99 (Figure 2(a)), c-kit (Figure 2(b)), and synaptophysin (Figure 2(c)).