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A case of T-cell prolymphocytic leukemia



A case of T-cell prolymphocytic leukemia



Japanese Journal of Clinical Hematology 33(6): 817-822



A 54-year-old man who had been known to have a high prolymphocyte count for four years was admitted to our hospital because of dyspnea in September, 1990. Physical examination revealed skin eruption, lymphadenopathy and hepatosplenomegaly. Chest X-ray demonstrated bilateral pleural effusions. The leukocyte count was 232,900/microliter with 99% lymphoid cells possessing single nucleoli. The cells expressed the phenotype CD2+, CD3-, CD4+, CD7+, and CD8-. Southern blot analysis of DNA from these cells revealed monoclonal rearrangement of T-cell receptor beta-chain genes. Anti-human T-cell lymphotropic virus type 1 (HTLV-1) antibody and HTLV-1 proviral DNA were not detected. A biopsy specimen from the skin lesions showed infiltration of the leukemic cells which were positive for anti-MT1 antibody. Histological finding of the axillary lymph node was malignant lymphoma, diffuse, medium-sized, T-cell type. Combination chemotherapy resulted in the improvement of skin eruption, lymphadenopathy, hepatosplenomegaly and pleural effusions, although his prolymphocyte count increased to 910,000/microliters. He died of cerebral bleeding in July, 1991. We diagnosed this case as T-cell prolymphocytic leukemia, observed for five years.

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Accession: 039031233

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PMID: 1433923


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