CASE REPORTS
JOURNAL ARTICLE
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Difficulty in classifying a B cell chronic lymphoproliferative disorder CD5+.

We present the case of a 53 years old woman diagnosed with splenic marginal zone lymphomas with plasmacytic differentiation (after a lymph node biopsy), who, complained of mild asthenia, weight loss (about 10 kg in 9 months), spatial disorientation during the last period. The clinical examination revealed slight pallor, normal cardiovascular and respiratory examination; painful cervical, about 5cm in diameter and also non-painful inguinal lymphadenopathies, increased consistency, freely movable, about 2 cm in diameter. The patient presented enlarged liver (lower limit at 3 cm below the ribs) and spleen (inferior pole at the ombilicus). The laboratory tests showed leucocytosis with lymphocytosis-a clonal population of lymphocytes- CD19+, CD20low+, CD22+, CD5low+, CD24+, CD200low+, CD79B+, CD43-, FMC7+/-, CD10+/-, CD34-, BCL2+, TdT-, CD34-, CD10-, CD3-. We suggested the diagnosis of mantle cell lymphoma, blastoid variant and performed a bone marrow biopsy . The bone marrow biopsy excluded the diagnosis of mantel cell lymphoma, based on the absence of cycline D1. The histopathological appearance and the immunohistochemical tests (CD20+, CD79a+, CD5low+, TdT-, CD34-cycline D1-) suggested a blastoid variant of small lymphocytic lymphoma.

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