[A comparative study of CT and plain X-ray film in the diagnosis of interstitial pulmonary disease in patients with rheumatoid arthritis].
In order to detect the interstitial pulmonary disease of rheumatoid arthritis (RA), we studied 91 patients with RA and compared the appearances of high resolution CT with those of plain chest X-ray film. We found 43 cases of interstitial pneumonitis on CT. We classified the CT and X-ray appearances as 4 groups (0-3) based on the degrees of pulmonary lesions. The both classifications accorded only in 46 cases (51%). In 46 cases who were not detected any changes by plain X-ray film, 17 were detected interstitial changes by CT. As to the early interstitial changes, the detectability of CT was superior to that of plain X-ray film.
Fujii
M
M
Adachi
S
S
Tanaka
K
K
Shimizu
T
T
Hirota
S
S
Sako
M
M
Kono
M
M
Imura
S
S
D000328:Adult; D000367:Age Factors; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011658:Pulmonary Fibrosis / Q000000981:diagnostic imaging* / Q000209:etiology; D013902:Radiography, Thoracic; D012307:Risk Factors; D012737:Sex Factors; D014057:Tomography, X-Ray Computed