title: Microscopic polyangiitis after influenza vaccination.
abstract: After influenza vaccination an 83-year-old woman was referred to us because of fever and sore throat with no response to antibiotics. Chest computed tomography showed thickened bronchovascular bundles, multiple nodules with feeding vessels, and consolidation. Laboratory tests showed a high level of serum myeloperoxidase anti-neutrophil cytoplasmic antibody (MPO-ANCA) and soluble interleukin-2 receptor (sIL-2R), as well as abnormal renal function and urinary sediment. Transbronchial lung biopsy revealed organizing pneumonia. We made a diagnosis of microscopic polyangiitis after influenza vaccination. Corticosteroids and cyclophosphamide were effective. Careful attention should be paid to severe adverse effects such as systemic vasculitides after influenza vaccination.
authors.affiliation: Department of Internal Medicine, Osaka Prefectural Rehabilitation Center For Physically Disabled Persons, Japan.
authors.forename: Masato
authors.initials: M
authors.lastname: Uji
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Matsushita
authors.forename: Shinichi
authors.initials: S
authors.lastname: Iwata
mesh_terms: D000305:Adrenal Cortex Hormones / Q000627:therapeutic use; D000368:Aged; D000369:Aged, 80 and over; D003520:Cyclophosphamide / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007252:Influenza Vaccines / Q000009:adverse effects*; D014657:Vasculitis / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D018366:Vasculitis, Leukocytoclastic, Cutaneous / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology
chemical_list: D000305:Adrenal Cortex Hormones; D007252:Influenza Vaccines; D003520:Cyclophosphamide