Acute leukemic phase of anaplastic lymphoma kinase-anaplastic large cell lymphoma: A case report and review of the literature

Figure 1 Hematoxylin and eosin staining and immunohistochemical staining results. The lymphoma cells showed pleomorphic large cell proliferation gathering in the lymph node sinus under hematoxylin and eosin staining at low magnification (× 100). At high magnification (× 200), the cells were gray blue, rich in cytoplasm, pleomorphic nuclei, and obvious nucleoli. HE: Hematoxylin and eosin; ALK: Anaplastic lymphoma kinase.