Abstract
Riziform bodies are structures in the synovial fluid or attached to the synovium,
which macroscopically resemble rice grains. They are common in patients with
rheumatoid arthritis and result from a chronic inflammation. They are found in
25% of aspiration procedures or joint surgery. However, there are still no
publications reporting its presence in the subcutaneous tissue. We report for
the first time the occurrence of riziform bodies in the subcutaneous plane of
the palmar region in a patient with rheumatoid arthritis, confirmed by
sonographic and anatomopathological examination, successfully treated with
surgical drainage, without recurrences after two years of follow-up.