IgG4-related sclerosing cholangitis associated with essential thrombocythemia: A case report

Figure 2 Bone marrow examination. A and B: Platelets existed in the form of piles and pieces in the peripheral blood smear and bone marrow smear (green arrows); C: Proplatelet-producing megakaryocytes were markedly increased in the bone marrow smear (red five-pointed star); D and E: The number of megakaryocytes was significantly elevated, especially megakaryocytes with large cell bodies and hyperlobated nuclei, and they were isolated or arranged in dense clusters (reticular fibrosis grade of MF-1) (Hematoxylin-eosin staining: 200 times, 400 times) (white arrows); F: CD61 immunohistochemistry was also positive on megakaryocytes (green five-pointed star).