Juvenile chronic arthritis with persistently positive tests for rheumatoid factor (sero-positive juvenile rheumatoid arthritis).
D000293:Adolescent; D001171:Arthritis, Juvenile / Q000000981:diagnostic imaging / Q000235:genetics / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D011859:Radiography