Fig. 3From: Synovial tissue features associated with poor prognosis in inflammatory arthritisHistological findings associated with PPF in inflammatory arthritis. *PPF, poor prognostic factors; RA, rheumatoid arthritis; PsA, psoriatic arthritis; UA, undifferentiated arthritis; L, lining; SL, sublining; LN, Ectopic Lymphoid neogenesis; PMN, polymorphonuclears cells; M∅, macrophagesBack to article page