title: Infectious myositis involving the piriformis in a patient with rheumatoid arthritis.
abstract: A 49-year-old Japanese woman treated with oral corticosteroids, methotrexate, and infliximab for malignant rheumatoid arthritis was admitted because of fever and low back pain. The white blood cell count and C-reactive protein concentration were elevated. Lumbar and pelvic computed tomography showed enlargement of the piriformis muscle including a hypodense area consistent with gas formation. The patient was treated successfully for infectious myositis with intravenous antibiotics.
authors.affiliation: Department of Japanese Oriental Medicine, Toyama Prefectural Central Hospital, 2-2-78 Nishinagae, Toyama, 930-8550, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Oda
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Fujinaga
authors.forename: Kozo
authors.initials: K
authors.lastname: Takahashi
mesh_terms: D000305:Adrenal Cortex Hormones / Q000009:adverse effects*; D000900:Anti-Bacterial Agents / Q000008:administration & dosage; D000911:Antibodies, Monoclonal / Q000009:adverse effects*; D000935:Antifungal Agents / Q000008:administration & dosage; D018501:Antirheumatic Agents / Q000009:adverse effects*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D002177:Candidiasis / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000209:etiology; D004359:Drug Therapy, Combination; D005260:Female; D015725:Fluconazole / Q000008:administration & dosage / Q000031:analogs & derivatives; D006801:Humans; D000069285:Infliximab; D008727:Methotrexate / Q000009:adverse effects*; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000000981:diagnostic imaging / Q000382:microbiology; D009220:Myositis / Q000000981:diagnostic imaging / Q000209:etiology* / Q000382:microbiology; D010755:Organophosphates / Q000008:administration & dosage; D013203:Staphylococcal Infections / Q000000981:diagnostic imaging / Q000188:drug therapy / Q000209:etiology; D014057:Tomography, X-Ray Computed
chemical_list: D000305:Adrenal Cortex Hormones; D000900:Anti-Bacterial Agents; D000911:Antibodies, Monoclonal; D000935:Antifungal Agents; D018501:Antirheumatic Agents; D010755:Organophosphates; C486878:fosfluconazole; D015725:Fluconazole; D000069285:Infliximab; D008727:Methotrexate