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Figure 1: Photomicrographs showing histomorphology and immunohistochemistry features of c-kit positive spindle cell gastrointestinal stromal tumor. (a) Interlacing fascicles of tumor spindle cells (hematoxylin and eosin ×100), (b) c-kit, (c) DOG1, and (d) PDGFRα showing membranous (4+), (3+), and (4+) positivity, respectively (×200)

Figure 1: Photomicrographs showing histomorphology and immunohistochemistry features of c-kit positive spindle cell gastrointestinal stromal tumor. (a) Interlacing fascicles of tumor spindle cells (hematoxylin and eosin ×100), (b) c-kit, (c) DOG1, and (d) PDGFRα showing membranous (4+), (3+), and (4+) positivity, respectively (×200)