B-Type Large-Cell Primary Splenic Lymphoma with Massive Involvement of the Red Pulp

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Abstract
A B-type large-cell primary splenic lymphoma with massive red-pulp involvement was diagnosed in a 64-year-old woman presenting with malaise, fever, anemia, atypical lymphoid cells in peripheral blood, and splenomegaly. This case differs from most splenic lymphomas both macroscopically and microscopically. At macroscopic examination, the spleen was homogeneously red without tumoral nodules or masses. Microscopically, the cords of the red pulp were extensively invaded by tumor cells maintaining patient sinuses. The white pulp was reduced by expansion of the red pulp. To our knowledge only few additional cases of splenic lymphoma with similar features have been previously described. The differential diagnosis of this unusual form of lymphoma with other lymphoproliferative disorders is briefly discussed.

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