[Comparison of radiologic lesions of rheumatoid polyarthritis in function of the presence or the absence of the rheumatoid factor IgA].

The authors compared, with the help of five radiological indices bearing on part (hand and wrists) or the all the articulations of the limbs concerned by rheumatoid arthritis (RA), a group of 45 RA with rheumatoid factor IgA (RF IgA) with a group of 45 RA without RF IgA by matching them according to age, sex and duration of evolution. They did not find any significant difference between the two groups for any of the indices. Although they are more often associated with agglutinant RF IgM, the RA with RF IgA are not more severe on the radiological level than the RA without FR IgA.