93 patients ( 169 joints ) suffered from rheumatoid arthritis of different ara-stages ( i = 16 , ii = 31 , iii = 27 , iv = 19 ; 67 seropositive , 26 seronegative ) , 14 patients with 24 treated joints had chronic synovitis other than rheumatoid arthritis .
C0003873
rheumatoid arthritis
C0022417
joints