Abstract
IntroductionNodular fasciitis is a benign myofibroblastic proliferation arising from the fascia. Until now, there have been only two reported cases of intra-articular nodular fasciitis in the elbow joint. Presentation of caseWe report a case of a 19-year-old woman with a 3-month history of pain in the left elbow. Contrast-enhanced T1-weighted magnetic resonance imaging (MRI) showed an intra-articular lobulated mass on the anterior portion of the elbow joint, with accompanying effusion. The patient subsequently underwent arthroscopic excision of the mass. Histologically, intra-articular nodular fasciitis was the final diagnosis. At the most recent follow-up, 20 months after surgery, the patient had no subjective symptoms, including pain. The final MRI findings showed no tumor recurrence. DiscussionAs nodular fasciitis is not generally known to arise within a joint, the occurrence at such anatomical locations may lead to a misdiagnosis. Intra-articular nodular fasciitis is rarely encountered, and therefore, is not usually considered during the clinical investigation of joint symptoms. ConclusionPreoperative diagnosis was difficult in this case because of nonspecific preoperative clinical findings. Although histological examination is necessary to establish a diagnosis, we recommend that intra-articular nodular fasciitis should be included in the differential diagnosis of intra-articular mass lesions.
Highlights
Nodular fasciitis is a benign myofibroblastic proliferation arising from the fascia
Nodular fasciitis is a benign, usually self-limiting, myofibroblastic proliferation arising from the fascia with a predilection for the upper extremities, trunk, and the head and neck region in young adults [1]
This report describes a rare case of intra-articular nodular fasciitis arising in the elbow joint
Summary
There have been only two reported cases of intra-articular nodular fasciitis in the elbow joint. PRESENTATION OF CASE: We report a case of a 19-year-old woman with a 3-month history of pain in the left elbow. Contrast-enhanced T1-weighted magnetic resonance imaging (MRI) showed an intraarticular lobulated mass on the anterior portion of the elbow joint, with accompanying effusion. Intra-articular nodular fasciitis was the final diagnosis. At the most recent follow-up, 20 months after surgery, the patient had no subjective symptoms, including pain. The final MRI findings showed no tumor recurrence. Intra-articular nodular fasciitis is rarely encountered, and is not usually considered during the clinical investigation of joint symptoms. CONCLUSION: Preoperative diagnosis was difficult in this case because of nonspecific preoperative clinical findings. Histological examination is necessary to establish a diagnosis, we recommend that intra-articular nodular fasciitis should be included in the differential diagnosis of intra-articular mass lesions
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