Epidemiology Of Systemic Vasculitis Research Articles

Different epidemiologic profiles of systemic vasculitis between Brazil and Peru-preliminary results in two referral centers from both countries.

Little is known about the epidemiology of systemic vasculitis in South American countries. The aim of this study is to compare the prevalence of systemic vasculitides in two vasculitis referral centers from Brazil and Peru. A cross-sectional study was performed and all patients above 18years of age, with at least 6months of follow-up and who met classification or diagnosis criteria for the most common forms of vasculitis, were included. A total of 562 patients with systemic vasculitis were analyzed, 345 (61.4%) from Brazil and 217 (38.6%) from Peru. The frequency of Behçet's disease (37.9% vs. 1.8%; p < 0.0001), Takayasu arteritis (TAK) (25.2% vs. 6.9%; p < 0.0001), and giant cell arteritis (9.8% vs. 0.9%; p < 0.0001) was higher in the Brazilian center than the Peruvian one. On the other hand, the frequency of microscopic polyangiitis (MPA) (67.3% vs. 2.8%; p < 0.0001) and renal-limited vasculitis (2.8% vs. 0.0%; p = 0.009) was higher in the Peruvian center. No differences were found concerning other forms of vasculitis. At diagnosis, Brazilian patients with TAK, granulomatosis with polyangiitis, and MPA were younger than Peruvian patients. Epidemiologic differences in the frequency of systemic vasculitis are observed between a vasculitis referral center from Brazil and another from Peru. Key Points • Significant differences are observed regarding the epidemiologic profile of systemic vasculitis between Brazil and Peru. • MPA is the predominant form of vasculitis in Peru while BD and TAK are the most frequent forms of vasculitis in Brazil. • The age at diagnosis of TAK, MPA, and GPA was lower in Brazilian patients than in Peruvian patients.

FRI0230 Stable incidence rates of anca-associated vasculitides and giant cell arteritis in northern germany (schleswig-holstein) from 1998 to 2010

BackgroundLittle data is available regarding the epidemiology of systemic vasculitides (SV), particularly on their incidence. Available data is heterogenous and often derived from referral centers or small populations.ObjectivesTo assess the...

Epidemiology of the Vasculitides

The epidemiology of systemic vasculitis is becoming increasingly well understood. Giant cell arteritis is the commonest type of vasculitis with an incidence that is highest in populations of Scandinavian descent, where the annual incidence reaches 15 to 35/100,000 aged > 50 years. Takayasu's arteritis has a relatively uniform global incidence of one to two/million. The ANCA-associated vasculitides have an overall incidence of 20/million with a peak age of onset at 65 to 74 years. Wegener's granulomatosis appears to be more common in northern Europe compared with microscopic polyangiitis, which seems to be more common in southern Europe. Henoch-Schönlein purpura is the commonest form of childhood vasculitis in the West with an incidence of 20/100,000 aged < 17 years, but it is much rarer in adults (13/million). Kawasaki disease is commonest in the childhood population of southeast Asia; in Japan the incidence is 500/million aged < 5 years, 50% of cases occur in those aged < 2 years. Behçet's disease occurs along the Silk Road and in the Mediterranean littoral with a prevalence in Turkey of 380/100,000. The various types of vasculitis have very different geographical and ethnic distributions, which provide clues to the pathogenesis.

ANCA-associated renal vasculitis

The hemoglobin level was 8.8 g/dL with normal indices. The CASE PRESENTATION erythrocyte sedimentation rate was 70 mm/hr. C-reactive proA 62-year-old white woman presented to another hospital tein was 30 mg/L (normal 10 mg/L), and she had a positive with a five-week history of profound malaise and small joint antineutrophil cytoplasmic antibody (ANCA) test to a titer of arthralgia. Initially she had noticed a mild sore throat that set1:400 serum dilution by indirect immunofluorescence with a tled spontaneously. She had transient redness of her left conperinuclear pattern. Subsequent antigen-specific ELISA conjunctiva. One week after the onset of symptoms, she had a firmed reactivity to myeloperoxidase (MPO), denoting MPOsingle episode of macroscopic hematuria for which she received ANCA (Fig. 1). The ANA, anti-DNA, and anti-GBM antibody antibiotics from her family doctor. She denied dysuria or uritests were negative. Complement C3 and C4 levels were nornary frequency. For one week prior to admission, she had mal, and cryoglobulins were not detectable. Hepatitis B and suffered nausea and vomiting without abdominal pain or bowel C serologies were negative. After control of blood pressure, a disturbance. She had lost one stone (14 pounds) in weight. She renal biopsy was performed; the tissue contained eight glomerhad been hypertensive five years previously, but she had had uli. Of these, one was globally sclerosed, three were normal, no other antecedent illnesses. There was no family history of and four contained acute segmental lesions of various sizes renal disease, hypertension, or rheumatic complaints. She had with thrombosis, tuft disruption, and a few cells in Bowman’s four adult children, all of whom were well. Medication on space (Fig. 2). Tubules were acutely damaged, with blood in admission comprised a beta blocker (atenolol, 100 mg daily) a few. A patchy infiltrate of chronic inflammatory cells was for hypertension. She did not smoke cigarettes and drank less present. Small arteries and arterioles appeared virtually northan three units (24 g) of alcohol per week. She was a poultry mal. Immunoperoxidase study revealed no significant immunofarmer and lived in a rural setting. protein deposition within glomeruli. Clinical examination revealed that she was pale and dehyThe clinical history, renal biopsy findings, and blood serology drated. She had no rash, no active synovitis, and no lymphadewere consistent with an acute vasculitic (pauci-immune) glonopathy. Her temperature was 37.2 C; pulse, 70 beats/min; merulonephritis of the microscopic polyangiitis type. An assessand blood pressure, 160/90 mm Hg lying and 145/80 mm Hg ment of vasculitic activity showed a Birmingham Vasculitis Acstanding. Her jugular venous pressure was not elevated and she tivity Score (BVAS) of 13 and a Vasculitis Damage Index (VDI) had no sacral or ankle edema. The heart sounds were normal score of 0. Therapy with prednisolone, 1 mg/kg/day, and oral

Epidemiology of systemic vasculitis: a ten-year study in the United Kingdom.

To describe the epidemiology of the primary systemic vasculitides (PSV; Wegener's granulomatosis, Churg-Strauss syndrome, microscopic polyangiitis, polyarteritis nodosa) in a well-defined population over a 10-year period. An inception cohort of patients from the Norwich Health Authority (NHA) who were >15 years of age and had PSV first diagnosed between January 1, 1988 and December 31, 1997 was collected. Incidence rates were adjusted for age and sex to the 1992 population. The prevalence of PSV in this cohort was estimated on December 31, 1997. Patients were classified according to the American College of Rheumatology 1990 vasculitis criteria and the Chapel Hill Consensus definitions. Eighty-two NHA residents fulfilled the inclusion criteria. There were 47 men and 35 women, with a mean age of 62.9 years (median 65.0 years). The overall annual incidence of PSV among NHA residents was 19.8/million (95% confidence interval [95% CI] 15.8-24.6). The point prevalence on December 31, 1997 was 144.5/million (95% CI 110.4-185.3). PSV was more common in males (23.5/million; 95% CI 17.3-31.3) than females (16.4/million; 95% CI 11.4-22.8). The age- and sex-specific incidence showed a clear increase with age, with an overall peak in the 65-74 year age group (60.1/million). In our study population, the annual incidence of PSV is slowly increasing with time and the incidence is greatest in the elderly.