Interventional digital subtraction angiography for small bowel gastrointestinal stromal tumors with bleeding

Figure 6 Representative findings from immunohistochemical examination of small bowel gastrointestinal stromal tumor. A: CD34-positive cells, as well as numerous blood vessels of various diameters (magnification × 100), are shown; B: The magnified imaging (A, white box) in which the CD34-positive tumor cells (B, black arrows) and vascular endothelial cells (B, white arrows) are clearly evident (magnification × 400).