Abstract
A 56-year-old man complained of fever, anemia, thrombocytopenia and lymph node swelling. Biopsy of the lymph node demonstrated angioimmunoblastic T cell lymphoma (AITL) with the loss of normal architecture, proliferation of neoplastic T cells, small vessels mixed with eosinophils and plasma cells. Aspiration of bone marrow was dry tap, and biopsy demonstrated myelofibrosis with increased proliferation of reticulin fiber. Markedly elevated plasma levels of transforming growth factor beta1 (TGF-beta1) and soluble interleukin-2 receptor (sIL-2R) were observed, and that of platelet growth factor (PDGF) AB was slightly elevated. After chemotherapy, remission of lymphoma was achieved. The aspiration of bone marrow became possible, and the level of TGF-beta1 and PDGF AB showed normalization; thus, myelofibrosis was reversible.
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