title: Air Bubbles in the Knee Joint.
authors.affiliation: From the *Division of Rheumatology and Clinical Immunology, Department of Medicine, Jichi Medical University; and †Department of Rheumatology, Haga Red Cross Hospital, Tochigi, Japan.
authors.forename: Takao
authors.initials: T
authors.lastname: Nagashima
authors.forename: Seiji
authors.initials: S
authors.lastname: Minota
mesh_terms: D000388:Air; D018501:Antirheumatic Agents / Q000627:therapeutic use; D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000188:drug therapy; D003937:Diagnosis, Differential; D004646:Emphysema / Q000209:etiology*; D006801:Humans; D007719:Knee Joint / Q000473:pathology*; D008297:Male; D008727:Methotrexate / Q000627:therapeutic use; D008875:Middle Aged; D014057:Tomography, X-Ray Computed
chemical_list: D018501:Antirheumatic Agents; D008727:Methotrexate