E37 Clinical and demographic criteria of Juvenile primary systemic vasculitis in Libyan Children

Abstract

Abstract Introduction Primary vasculitis syndromes are rare in childhood. The clinical manifestations depend on the vessels involved and can lead to significant mortality and morbidity. Aim To study demographic and clinical characteristics of patients with diagnosed with vasculitis other than Kawazaki disease and Henoch-Schonlein purpora (HSP) and to report the outcome of the patients. Materials and methods This is a case series conducted by reviewing the files of patients diagnosed with vasculitis and followed up at the pediatric rheumatology unit of the Tripoli Children Hospital, Libya from year 2000–2022. Data regarding patients’ demography, time of diagnosis, clinical features, laboratory results, treatment and complications were retrieved. Results A total of 37 cases included in the study. 17 (45.9%) were males and 20 (54%) were females followed up for a mean period of 4.48 ± 4.21. Mean age at diagnosis was 8.39 ± 3.84 years. Regarding the diagnosis, there were 3 (8.1%) patients with Takayasu arteritis, 5 (13.5%) patients with polyarteritis nodosa, 2 (5.4%) patients with cutaneous polyarthritis nodosa, 1 (2.7%) patients with granulomatosis with polyahgitis, 1 (2.7%) patient with microscopic polyangiitis, 3 (8.1%) patients with Chrug-Strauss disease, 16 (43.2%) patients with Behcet disease, 1 (2.7%) patients with cogan syndrome, 3(8.1%) patients with urticarial vasculitis, 1 (2.7%) patient with hypocomplementaemic vasculitis, and 1 (2.7%) patient with DADA2. Mean period between the start of symptoms and diagnosis was 1.4 ± 2.8 years. In 6 (16.2%) of the patients there was family history of vasculitis and in 11 (29.7%) the parents are consanguineous. Angiography revealed abnormalities in 5 (13.5%) of the patients. Skin biopsy was done in 4 (10.8%) patients [2 patients with polyarthritis nodosa and 2 patients with urticarial vasculitis] and renal biopsy was done in 1 (2.7%) patient. Steroid was used in 24 (64.9%), Azathioprine in 4 (10.8%) patients. Cellcept was used in 10 (27%) of the patients. Ciclosporin was used 1(2.7%) patient, cyclophosphamide in 3 (8.1%) patients and Immunoglobulin in 6 (16.2%) of patients. Biologics were used in six patients, adalimumab in one patient which was discontinued because of recurrent abscess. In the two patients who used infliximab, treatment was effective. Three patients were treated with tocilizumab, it was ineffective in two, therefore discontinued. However, tocilizumab was effective in one patient with Takayasu arteritis. Complications developed in 23 (62.2%). Muscle atrophy in 1, deforming arthritis in 1, osteoporosis in 1, mouth ulcers in 2, hypertension in 2, hearing loss in 1, chronic sinusitis in 1, cardiovascular accident in 1, cataract in 1, visual impairment in 3, proteinuria in 2, pulmonary fibrosis in 1, chronic asthma in 3, impaired renal function in 1. Conclusion This is the first report of pediatric vasculitis cases in Libya. It showed a heterogeneous spectrum of vasculitis with high rate of consanguinity and low rate of reported family history of vasculitis. Hopefully this report will increase awareness among clinicians of vasculitis and more cases will be diagnosed.