Fig. 5From: A duodenal gastrointestinal stromal tumor mimicking a pancreatic neuroendocrine tumor: a case reportMicroscopic findings included the tumor being made up of spindle-shaped cells, including nine mitotic figures per 50 high-power fields, immunohistochemically positive for vimentin, C-kit, and DOG-1. The tumor was diagnosed as a high risk dGIST on the basis of the Fletcher classification or the modified Fletcher classificationBack to article page