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Medicina (Buenos Aires)

Print version ISSN 0025-7680


DI BENEDETTO, Nicolás et al. General characteristics of 29 patients with small vessel vasculitis. Medicina (B. Aires) [online]. 2010, vol.70, n.2, pp.127-132. ISSN 0025-7680.

The objective of this series was to describe the general characteristics and clinical manifestations of patients with small vessel vasculitis who were assisted in the autoimmunity department of a community public hospital and to compare the results with the literature. Clinical records under the label of vasculitis in a period of 16 years were reviewed in a retrospective way. All patients selected fulfilled diagnostic criteria of small vessel vasculitis. The data were extracted and the analysis of survival was completed by phone. Later a bibliographical search was carried out and the results were compared. Thirteen patients with Wegener's granulomatosis, 6 with Churg-Strauss syndrome and 10 with microscopic polyangiitis were included. Fifty five percent (16) were under 55 years old when diagnosis was made and male/female ratio was 2.6 to 1. The diagnostic delay was over a year in 46% of the cases. Respiratory and ear-nose-throat were the most frequently affected systems. Anti-neutrophil cytoplasmic antibodies were present in 79% of patients. Overall mortality was 24% (7/29). There were several differences between the results of our series and the literature: the presentation form, affected systems and percentage of patients with anti-neutrophil cytoplasmic antibodies. Greater diagnostic delay and worse prognosis were observed in anti-neutrophil cytoplasmic antibody negative patients. Special attention should be given to these antibodies since they constitute a significant tool at the time of diagnosis.

Keywords : Vasculitis; Wegener granulomatosis; Churg-Strauss syndrome.

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