Stevens-Johnson syndrome and toxic epidermal necrolysis in childhood-onset systemic lupus erythematosus patients: a multicenter study.

Objective: To assess Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) in a large population of childhood-onset systemic lupus erythematosus (cSLE) patients.

Methods: Multicenter study including 852 cSLE patients followed in Pediatric Rheumatology centers in São Paulo, Brazil. SJS was defined as epidermal detachment below 10% of body surface area (BSA), overlap SJS-TEN 10-30% and TEN greater than 30% of BSA.

Rituximab use in young adults diagnosed with juvenile idiopathic arthritis unresponsive to conventional treatment: report of 6 cases.

Juvenile idiopathic arthritis (JIA) is the most common rheumatic disease in childhood. Without an effective therapy, patients may progress quickly to functional disability. Recently, depletion of B cells emerged as a new approach for the treatment of autoimmune diseases, including JIA.

[Musculoskeletal manifestations as the onset of acute leukemias in childhood].

Objective: To study the frequency, the clinical features and laboratory exams of patients with musculoskeletal symptoms at the onset of acute leukemia.

Methods: Retrospective, descriptive study including patients diagnosed with acute leukemia, and treated at the Institute of Pediatric Oncology of UNIFESP, carried out from November 1999 to February 2000. The data on musculoskeletal complaints were obtained from a questionnaire.