Gastrointestinal stromal tumors (GIST) tumors are a rare, though typical cause for upper GI bleeding. Excavated ulcerated lesions are common; however, a clear-cut visualization of the tumor surface ("GISToscopy") itself has not yet been reported. In line, careful biopsy taking streamlines the diagnostic work-up by providing pathologic diagnosis.
Keywords: esophago‐gastro‐duodenoscopy; gastrointestinal stromal tumor; upper gastrointestinal bleeding.