Multiple periarticular erosions are observed bilaterally with adjacent large soft tissue masses and relatively preserved joint spaces.
In the right hand, these findings are most prominent at the 1st interphalangeal, 2nd-4th proximal interphalangeal, 1st-3rd metacarpohalangeal, carpometacarpal, intercarpal, radiocarpal and ulnocarpal joints.
In the left hand, the findings are most prominent at the ulnar styloid, scapholunate joint, first and fifth carpometacarpal joints, second and fifth metacarpophalangeal joints, 1st interphalangeal joint, 3rd, 4th and 5th proximal interphalangeal joints and 3rd and 5th distal interphalangeal joints.