title: Rheumatoid arthritis developing after plant thorn synovitis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000209:etiology* / Q000276:immunology; D006801:Humans; D008213:Lymphocyte Activation; D008297:Male; D008875:Middle Aged; D010944:Plants; D013585:Synovitis / Q000209:etiology* / Q000276:immunology; D014950:Wounds, Penetrating / Q000150:complications*