Leeds study of 63 pts w/ palindromic rheumatism (PR) progressed to Persistent IA (PIA) @ median 13.4 mos, hands predominating across flares. PIA developed in joints involved in PR flares in 71% of pts. @RA Dx, PR onset pts had signif higher swollen joints(4.1 vs 3.2) https://t.co/g2vjfVjDlK