Hematemesis as the initial complication of pancreatic adenocarcinoma directly invading the duodenum: A case report

Figure 3 Morphology of adenocarcinoma and pancreatic lesion. A: Biopsy of the duodenal tumor via upper gastrointestinal endoscopy revealed a picture of adenocarcinoma cells in an acinar pattern; B: Biopsy of the pancreatic head tumor via computed tomography-guidance showed moderately differentiated adenocarcinoma cells infiltrating into the collagenous stroma (hematoxylin and eosin stain; magnification ×200).