Figure 1.

A, Peripheral blood smear showing a lymphoma cell with relatively condensed chromatin and prominent nucleolus. (Wright-Giemsa, original magnification ×1000). B, Bone marrow core biopsy showing hypercellular marrow with complete replacement by a diffuse lymphocytic infiltrate (Hematoxylin-Eosin, original magnification ×200). C, Bone marrow core biopsy showing large lymphocytes with relatively condensed chromatin and occasional nucleoli (Hematoxylin-Eosin, original magnification ×400). D, CD117 immunohistochemistry of bone marrow core biopsy showing strong membranous and cytoplasmic staining of tumor cells (original magnification ×200). Please refer to subsection entitled "Morphologic Analysis" for further details.