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Macroscopic and microscopic findings of resected specimen at the second surgery. A: Specimen resected during pancreaticoduodenectomy. Note the papillary tumor in the inferior bile duct (white arrow); B: Microscopic examination showed papillary adenocarcinoma with expansive growth (hematoxylin-eosin, magnification; × 100). Tumor cells were confined within the fibromuscular coat. BDM: Bile duct margin.
