Fig. 4From: A rare case of inflammatory myofibroblast tumor of the stomach successfully treated by inverted laparoscopic and endoscopic cooperative surgeryA histopathological examination revealed increased collagen fiber proliferation and the infiltration of spindle-shaped cells, lymphocytes, and numerous stromal cells from the submucosal layer to the muscular layer (a hematoxylin and eosin staining, ×40. b Hematoxylin and eosin staining, ×200). The mitotic index was 5%Back to article page