Figure 1. A 58-year-old female with nerve sheath tumor in the greater curvature of stomach. Sonography (A) revealed the mass heterogenous and a low internal echo-level. CDFI (B) detected asteria flow. Non-enhanced CT (C) showed a large, well-defined margin and irregular mass (arrows). The density of the tumor was heterogeneous with some stippled calcification (black arrows). On Contrast-enhanced CT (D, E) the tumor showed slight enhancement. Immunochemistry staining (F) showed the bundles of spindle cell (black arrows) with brown color, positive to S-100 protein (S-100 stain, × 200).
Figure 2. A 58-year-old female with nerve sheath tumor in left upper quadrant. Abdomen sonography (A) revealed a homogeneous, hypoechoic and dumb bell shaped mass. MRI showed a large, irregular and well-defined margin mass (arrows). The mass was hypointense on T1 weighted imaging (B) and moderate to markedly hyperintense on T2 weighted imaging (C). On contrast enhanced MR images, the tumor demonstrated heterogeneous enhancement (D, E, F). Histological images (G) and immunochemistry staining (H) showed the bundles of spindle cells (arrows) with brown-tan color, positive to S-100 protein (S-100 stain, × 200).