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Fig. 5 | Journal of Medical Case Reports

Fig. 5

From: Successful resection of a slow-growing synchronous pulmonary metastasis from distal cholangiocarcinoma resected 3.5 years after initial surgery: a case report

Fig. 5

The resected lung specimen resembled the previous distal cholangiocarcinoma. Histopathological examination (H&E staining) of the lung tumor showed tumor cells forming irregular tubular structures with a lepidic pattern (a, original magnification × 10; b, original magnification × 200). Immunohistochemically, the tumor cells were positive for cytokeratin 7 (c, original magnification × 200) and CDX-2 (d, original magnification × 200) and negative for thyroid transcription factor 1 (e, original magnification × 200), napsin A (f, original magnification × 200), and cytokeratin 20 (g, original magnification × 200)

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Journal of Medical Case Reports

ISSN: 1752-1947