MONTAGE: JOINT: Course of Rheumatoid Arthritis, Biopsy and arthroscopy of synovium -- EARLY STAGES; Upper image-biopsy; lower image-arthroscopy -- BIOPSY-There is mild proliferative synovitis with an increase in connective tissue, more blood vessels, surface cell proliferation, and mononuclear infiltration. There is modest edema. ARTHRO (PLAIN FILM)