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As knowledge of the epidemiology of primary systemic vasculitides (PSV) is fragmentary, we attempted to investigate the incidence of temporal arteritis (TA), Takayasu’s arteritis (TAA), polyarteritis nodosa (PAN), Wegener’s granulomatosis (WG), Churg-Strauss syndrome (CSS), Henoch-Schönlein purpura (HSP), and hypersensitivity vasculitis (HSV) in Vilnius according to the American College of Rheumatology (ACR) 1990 criteria and to compare the data with the results from selected European studies.1
To be included in this study the patients had to (a) have been diagnosed with systemic vasculitides in the 10 year period from 1990 to 1999 and (b) have been resident in Vilnius at the time of diagnosis. Patients referred to Vilnius University Hospital rheumatology department were prospectively included in the study. Also, the patients’ registration books from tertiary nephrology, dermatology, and …