title: [T-cell granular lymphocyte-proliferative disorder without severe infection for 13 years despite severe neutropenia].
abstract: A 68-year-old woman was referred to Oami Hospital for severe leukocytopenia. Laboratory data revealed severe leukocytopenia (0.8x10(9)/l), severe neutropenia (0.22x10(9)/l) and IgM-kappa monoclonal gammopathy. Granular lymphocytes accounted for more than 90% of leukocytes. Surface marker analysis revealed that these lymphocytes were CD3+, CD4-, CD8+ and CD16+, and monoclonal rearrangement of T-cell receptor genes was seen on Southern blot hybridization analysis. She was diagnosed with T-cell lineage granular lymphocyte proliferative disorder (T-GLPD). During 13-year follow-up without granulocyte-colony stimulating factor (G-CSF) administration, except for one hospitalization because of bacterial pneumonia, she has not experienced severe infection, despite severe neutropenia. T-GLPD should be kept in mind as a cause of leukocytopenia with or without monoclonal gammopathy, and surface marker or Southern blot hybridization analysis should be considered for determining the diagnosis. There are many reports about Caucasian patients with T-GLPD suffering from recurrent infections and dying of severe infection, but in Japanese T-GLPD patients, severe infection is very rare, as shown in the present case report.
authors.affiliation: Department of Hematology, Oami Hospital.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Tanaka
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Hashimoto
authors.forename: Chikara
authors.initials: C
authors.lastname: Sakai
authors.forename: Daijiro
authors.initials: D
authors.lastname: Abe
authors.forename: Shio
authors.initials: S
authors.lastname: Sakai
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Takagi
mesh_terms: D000368:Aged; D003141:Communicable Diseases; D005260:Female; D015200:Fluoroimmunoassay; D005500:Follow-Up Studies; D006801:Humans; D007075:Immunoglobulin M; D054066:Leukemia, Large Granular Lymphocytic / Q000150:complications / Q000175:diagnosis* / Q000235:genetics / Q000628:therapy*; D009503:Neutropenia / Q000150:complications*; D010265:Paraproteinemias; D018410:Pneumonia, Bacterial; D012720:Severity of Illness Index
chemical_list: D007075:Immunoglobulin M