PMID: 9423340Jan 10, 1998Paper

Acute myelogenous leukemia (M4) occurring during chronic lymphocytic leukemia

[Rinshō ketsueki] The Japanese journal of clinical hematology
K MoritaH Shiku

Abstract

A 68 year-old-man was first found to have CLL with IgG, kappa monoclonal gammopathy 6 years ago. Bestrabucil (total dose 35,150 mg) was taken orally from August 1989 to December 1989. Etoposide (total dose 23,100 mg) was then orally administered from January 1990 to December 1995. He was then referred to our hospital in January 1996 because of progressive anemia and thrombocytopenia. Peripheral blood showed a WBC of 21,200/microliter with 4% myeloblasts and 79% lymphocytes, Hb 7.9 g/dl and Plt 5 x 10(4)/microliter. The serum level of lysozyme was increased (75.6 micrograms/ml). Bone marrow aspiration disclosed hyper-cellularity with proliferation of the blasts and a monocytoid cell population, which cytochemical studies demonstrated to be of the myelo-monocytic series, thus indicating acute myelogenous leukemia (AML-M4) superimposed on CLL. Surface marker analysis of bone marrow mononuclear cells revealed reactivity for CD 11c, CD13, CD15, CD33, HLA-DR. The karyotype was normal. Southern blot analysis and reverse transcriptase-polymerase chain reaction did not reveal rearrangement of the MLL gene. Complete remission was achieved by chemotherapy consisted of BHAC, idarubicine, 6MP, vincristine and predonisolone. Long-term treatm...Continue Reading

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