Fig. 4From: Laparoscopic and endoscopic cooperative surgery for gastrointestinal stromal tumor with complete situs inversus: report of a caseHistopathological findings. Histopathological examination showed that the tumor was composed of interlacing fascicles of spindle-shaped cells with elongated nuclei (hematoxylin and eosin stain, magnification ×20) (a), and the mitotic index was more than five mitotic figures per fifty high power fields (hematoxylin and eosin stain, magnification ×200) (b). Immunohistochemical analysis revealed that the tumor cells were positive for KIT (magnification ×100) (c) and CD34 (magnification ×100) (d)Back to article page