Long-term survival of a patient with pancreatic cancer and lung metastasis: A case report and review of literature

Figure 2 Needle biopsy of lung metastasis. A: Hematoxylin and eosin stain of tissue with tubular structures, and cells that are not significantly heteromorphic (original magnification × 200); B: Immunohistochemical staining of CK19 was strongly positive on tumor-cell membranes (original magnification × 200); C: Immunohistochemical staining of CA19-9 was strongly positive in tumor-cell cytoplasm (original magnification × 200).