Intra-articular nodular fasciitis in the elbow joint, with an emphasis on MR imaging findings

Nodular fasciitis is a benign, usually self-limiting proliferation of myofibroblasts, arising from the fascia. In this article, a case of nodular fasciitis in the elbow joint of a 29-year-old man is presented. The nodular lesion developed from the synovial joint capsule in the elbow and histological and immunohistochemical studies revealed myofibroblastic proliferation. Only 13 cases of intra-articular nodular fasciitis have been reported in English literature. The present report describes the first case in which intra-articular nodular fasciitis occurs in the elbow joint of a patient. Additionally, magnetic resonance imaging findings of intra-articular nodular fasciitis are discussed along with a review of previous articles.