&Loefgrens Syndrome=Lofgren's syndrome is characterized by the triad of hilar adenopathy, acute polyarthritis, and erythema nodosum. Lofgren's syndrome is usually self-limiting: the erythema nodosum typically disappears in a few months and the joint symptoms within two years. However, approximately one-third of patients have a more persistent arthritis; rarely, the arthritic symptoms are recurrent. Occasionally, isolated involvement of the small joints of the hands may mimic the acute onset of rheumatoid arthritis. Among such patients, the diagnosis of acute sarcoid arthritis is most frequently made in retrospect when other, more common, features of the disease become apparent. In addition, the disorder can resemble rheumatic fever when the polyarthritis is migratory, and in young children with uveitis, juvenile rheumatoid arthritis.