Radiological Peripheral Involvement in a Cohort of Patients with Polyarticular Juvenile Idiopathic Arthritis at Adulthood

Radiological Peripheral Involvement in a Cohort of Patients with Polyarticular Juvenile Idiopathic Arthritis at Adulthood

Juvenile idiopathic arthritis (JIA) is a heterogeneous group of 7 diseases classified by the International League of Associations for Rheumatology (ILAR). Two forms with polyarticular onset were identified: rheumatoid factor (RF)-positive and RF-negative polyarticular JIA (pJIA).