
Keywords: هماتوکسیلین و ائوزین; CA 19-9; cancer antigen 19-9; CEA; carcinoembryonic antigen; CT; computed tomography; MRI; magnetic resonance imaging; PET; positron emission tomography; GIST; gastrointestinal stromal tumor; H&E; hematoxylin and eosin; Gastrointestinal stromal tumor (GIS