Case report 610

Imaging of Amyloid Arthropathy

“…14 Characteristic findings include asymmetric soft tissue masses, periarticular osteoporosis, preservation of the articular space, subchondral cysts, joint effusions, and erosions. 1,14,32,35,[39][40][41][42][43] Although the literature states that juxta-articular osteoporosis accompanies the radiographic changes of amyloidosis, this was not a feature of our patients. The symmetrical joint involvement and erosions are similar to rheumatoid arthritis, but the preser- vation of joint space and absence of juxta-articular osteoporosis is more characteristic of amyloid arthropathy (Fig.…”

“…1,28,29 The articular changes of amyloid arthropathy are bilateral and can occur in any joint but most frequently affect the shoulders, hips, wrists, and knees. 1,7,14,27,[30][31][32] Soft tissue amyloid deposition produces nodules resembling those of rheumatoid arthritis. Amyloid nodules are particularly prominent around the elbow, hand, and wrist joints.…”