Malignant lymphocytic lymphoma. Demonstration of a serum inhibitor of myelopoiesis and response to combination chemotherapy

The association of neutropenia with an indolent chronic T-suppressor cell lymphoproliferative disorder (LPD) has been well documented. The morphologic features and course suggest that this is a benign disorder. The authors studied a 58-year-old man with a chronic T-cell LPD, splenomegaly, and neutropenia. Chromosomal analysis revealed multiple abnormalities which progressively increased in number as the marrow lymphocytosis became more prominent. Subsequently he developed small bowel infiltration. A splenectomy resulted in only brief improvement in the neutropenia. Immunopathologic examination of the spleen was consistent with a well-differentiated lymphocytic lymphoma of a mature peripheral T-cell type without subset specific markers. Granulocyte-monocyte colony (CFU-GM) formation from the patient's marrow was normal and not augmented by T-cell depletion. Neither the patient's splenic T-cells nor serum suppressed granulopoiesis. In contrast to previous T-LPD with neutropenia whose malignant nature has been questioned, the clinical, cytogenetic, and pathologic features and course in this case indicate a malignant lymphoid process which was effectively treated with chemotherapy. Although the histologic pattern of red pulp involvement simulated hairy cell leukemia, that diagnosis was excluded by this patient's clinical, morphologic, and cytochemical features.

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A unique malignant T-cell lymphoproliferative disorder with neutropenia simulating hairy cell leukemia

Greenberg

Grogan²,

Takasugi

et al. 1985

Cancer

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A study on the mechanism of anemia and leukopenia in liver cirrhosis.

et al. 1988

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To elucidate the mechanism of anemia and leukopenia in the patients with liver cirrhosis, we investigated hematopoietic progenitor cell contents in their bone marrow, and the effects of their sera and blood mononuclear cells on hematopoietic progenitors from normal subjects. While there was no significant difference in the number of marrow CFU-E and BFU-E between the patients with liver cirrhosis and normal subjects, the number of marrow CFU-C was significantly reduced in liver cirrhosis patients. Patients' sera suppressed in vitro colony formation of normal CFU-E, BFU-E, and CFU-C, and the degree of suppression was well correlated with severity of anemia or granulocytopenia. In vitro colony formation of normal hematopoietic progenitor cells was not affected by blood mononuclear cells from liver cirrhosis patients. These results indicate that the appearance of humoral inhibitor(s) of hematopoietic progenitors plays a role in the development of anemia and granulocytopenia in liver cirrhosis.

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Malignant lymphocytic lymphoma. Demonstration of a serum inhibitor of myelopoiesis and response to combination chemotherapy

Cited by 2 publications

References 16 publications

A unique malignant T-cell lymphoproliferative disorder with neutropenia simulating hairy cell leukemia

A unique malignant T-cell lymphoproliferative disorder with neutropenia simulating hairy cell leukemia

A study on the mechanism of anemia and leukopenia in liver cirrhosis.

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