Takayasu arteritis with an initial presentation of chronic monoarthritis mimicking oligoarticular juvenile idiopathic arthritis

Patients with Takayasu arteritis (TA) generally present with non-specific symptoms that, if unrecognized and untreated, may develop vessel stenosis and/or aneurysm. There is limited data regarding chronic monoarthritis as the initial presentation in children with TA. We report a 6-yearold girl diagnosed and treated as oligoarticular juvenile idiopathic arthritis (JIA). She later developed stroke with malignant hypertension and was definitively diagnosed with TA. She additionally developed proteinuria secondary to focal segmental glomerulosclerosis. This is the report of a patient with chronic monoarthritis mimicking oligoarticular JIA which chronic monoarthritis was the presentation of TA. Since JIA is a diagnosis of exclusion, any atypical features of oligoarticular JIA should illuminate the possibility of an alternative diagnosis. Our literature review focused on musculoskeletal presentations of children with TA.