Primary Bone Marrow B-Cell Lymphoma Undetected by Multiple Imaging Modalities That Initially Presented with Hypercalcemia
Histopathology of bone marrow biopsy specimen. (a) Bone marrow biopsy (hematoxylin-eosin stain, x200) shows infiltration of large atypical cells. (b) The immunohistochemical staining for CD20 (x100) is diffusely positive in large atypical cells.
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