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Pathological examination revealed squamous cell carcinoma. A: Squamous cell carcinoma in the pancreas; B: Squamous cell carcinoma in the esophagus resected previously (hematoxylin-eosin staining, A: × 40; B: × 400); C: Vascular invasion in the pancreatic metastasis; D: Esophageal carcinoma (elastica van gieson staining, C: × 100, D: × 400).
