The Korean Journal of Internal Medicine

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Original Article
Korean J Med. 2008;74(1):78-83.
증례 : 털세포 백혈병 1예
이현규, 김상구, 이문희, 김진수, 문연숙, 최석진, 김철수
Hairy cell leukemia: A case report
Hyeon Gyu Yi, Sang Gu Kim, Moon Hee Lee, Jin Soo Kim, Yeonsook Moon, Suk-Jin Choi, Chul Soo Kim
경희대학교 의과대학 순환기내과학교실


Abstract
Hairy cell leukemia (HCL) is an uncommon chronic B-cell lymphoproliferative disease characterized by splenomegaly, cytopenia, and circulating lymphocytes with cytoplasmic projections. We describe a case of hairy cell leukemia that developed in a 47-year-old woman who visited this hospital for abdominal discomfort secondary to huge splenomegaly. A complete blood count performed at initial examination revealed pancytopenia, and peripheral blood smear showed typical hairy cells with cytoplasmic projections. Bone marrow aspiration yielded dry tap twice, and bone marrow biopsy, including touch imprint, revealed abnormal “fried-egg” cells and myelofibrosis. The hairy cells stained positive for tartrate-resistant acid phosphate. On immunophenotyping, leukemic cells were positive for CD19, CD20, CD25, and CD79a, findings suggestive of B-cell origin. A course of chemotherapy using 2-chlorodeoxyadenosine achieved complete remission, as demonstrated on bone marrow examination.

Keywords :Hairy cell leukemia, Splenomegaly, Pancytopenia, 2-Chlorodeoxyadenosine

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