title: Bacterial Pneumonia-induced Persistent Remission of Severe Immune Thrombocytopenia after Allogeneic Hematopoietic Stem Cell Transplantation.
abstract: A 53-year-old woman with chronic myeloid leukemia received allogeneic hematopoietic stem cell transplantation. After neutrophil engraftment, her platelet count exceeded 100,000/μL at day 64. While she was receiving corticosteroid treatment for chronic graft versus host disease (GVHD), her platelets suddenly dropped to 6,000/μL at day 210 and she was diagnosed with immune thrombocytopenia (ITP). Corticosteroids, intravenous high-dose gamma globulin (IVIg) and a splenectomy failed to increase her platelet count. She developed bacterial pneumonia at day 599 and antibiotic therapy was initiated. Soon after, her platelet count continuously increased. Her GVHD and ITP are now in remission without any ongoing treatment.
authors.affiliation: Hematology and Oncology, Tokai University School of Medicine, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Onizuka
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Matsushita
authors.forename: Shinichiro
authors.initials: S
authors.lastname: Machida
authors.forename: Masako
authors.initials: M
authors.lastname: Toyosaki
authors.forename: Jun
authors.initials: J
authors.lastname: Amaki
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Aoyama
authors.forename: Mitsuki
authors.initials: M
authors.lastname: Miyamoto
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Ando
mesh_terms: D000305:Adrenal Cortex Hormones / Q000008:administration & dosage; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D005260:Female; D006086:Graft vs Host Disease / Q000517:prevention & control; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects*; D006801:Humans; D015464:Leukemia, Myelogenous, Chronic, BCR-ABL Positive / Q000601:surgery*; D008875:Middle Aged; D010976:Platelet Count; D018410:Pneumonia, Bacterial / Q000188:drug therapy / Q000503:physiopathology*; D013921:Thrombocytopenia / Q000209:etiology* / Q000503:physiopathology*
chemical_list: D000305:Adrenal Cortex Hormones; D000900:Anti-Bacterial Agents