Objective To determine the long‐term outcome of patients with polyarteritis nodosa (PAN), microscopic polyangiitis (MPA), and Churg‐Strauss syndrome (CSS), to compare the long‐term outcome with the overall French population, to evaluate the impact on outcome of the type of vasculitis, prognostic factors, and treatments administered at diagnosis, and to analyze treatment side effects and sequelae. Methods Data from PAN, MPA, and CSS patients (n = 278) who were enrolled between 1980 and 1993 were collected in 1996 and 1997 and analyzed. Two prognostic scoring systems, the Five‐Factors Score (FFS) and the Birmingham Vasculitis Activity Score (BVAS), were used to evaluate all patients at the time of diagnosis. Results The mean (±SD) followup of the entire population was 88.3 ± 51.9 months (range 3 days to 192 months). Of the 85 deaths recorded, at least 41 were due to progressive vasculitis or its consequences. Death rates reflected disease severity, as assessed by the FFS (P = 0.004) and the BVAS (P < 0.0002), and the 2 scores were correlated (r = 0.69). Relapses, rarer in hepatitis B virus (HBV)–related PAN (7.9%) than in MPA (34.5%) (P = 0.004), occurred in 56 patients (20.1%) and did not reflect disease severity. Survival curves were similar for the subpopulation of 215 patients with CSS, MPA, and non–HBV‐related PAN who were given first‐line corticosteroids (CS) with or without cyclophosphamide (CYC). However, CS with CYC therapy significantly prolonged survival for patients with FFS scores ≥2 (P = 0.041). Relapse rates were similar regardless of the treatment regimen; only patients treated with CS alone had uncontrolled disease. CYC was associated with a greater frequency of side effects (P < 0.00001). Conclusion Rates of mortality due to PAN (related or unrelated to HBV), MPA, and CSS reflected disease severity and were higher than the mortality rate in the general population (P < 0.0004). Rates of relapse, more common in MPA than HBV‐related PAN patients, did not reflect disease severity. Survival rates were better among the more severely ill patients who had received first‐line CYC. Based on these findings, we recommend that the intensity of the initial treatment be consistent with the severity of the disease. The use of the FFS and BVAS scores improved the ability to evaluate the therapeutic response.

Objective. To describe the clinical, biologic, and histologic features of temporal artery biopsy (TAB)-localized systemic necrotizing vasculitides (SNV), and to assess their frequency among elderly patients undergoing TAB for suspected giant cell (temporal) arteritis (GCA).Methods. The frequency of a TAB localization of SNV was prospectively assessed in a multicenter study of elderly patients undergoing TAB for suspected GCA. All patients with SNV fulfilling the American College of Rheumatology criteria for a specific vasculitic syndrome and with evidence of vasculitis on TAB were included in a retrospective, descriptive study.Results. SNV was diagnosed based on the TAB in 1.4% of the patients with suspected GCA and in 4.5% of the positive (inflamed) TAB specimens. We retrospectively selected 27 patients (18 female, 9 male; mean ؎ SD age 62 ؎ 15 years, range 22-79 years) with SNV and TAB-localized vasculitis. Only 2 of these patients were known to have SNV before TAB localization. Twenty-two patients (81%) had cephalic symptoms, including jaw claudication in 33%, clinically abnormal temporal arteries in 33%, and neuro-ophthalmologic symptoms in 11%. All patients had systemic symptoms suggestive of SNV and histologically proven NV in the TAB specimens (70%) or elsewhere in other biopsy sites (74%). Abnormal biologic results suggestive of SNV were present in 17 patients (63%). For 4 patients, the TAB-documented involvement led to initial misdiagnoses of GCA, and systemic manifestations that developed under steroid therapy revealed the correct diagnosis. The final diagnoses of the patients were polyarteritis nodosa (PAN) (n ‫؍‬ 11), Churg-Strauss syndrome (n ‫؍‬ 6), micropolyangiitis (n ‫؍‬ 3), Wegener's granulomatosis (n ‫؍‬ 3), hepatitis B virus-related PAN (n ‫؍‬ 2), hepatitis C virus-related cryoglobulinemic vasculitis (n ‫؍‬ 1), and rheumatoid vasculitis (n ‫؍‬ 1).Conclusion. TAB-localized SNV presents a major diagnostic dilemma because it can mimic GCA. Careful analysis of clinical, biologic, and histologic data should lead to the correct diagnosis and help guide the clinician's choice of appropriate therapy.

Objective-To determine the factors associated with the occurrence of Pneumocystis carinil pneumonia (PCP) in Wegener's granulomatosis (WG). Methods (PCP) is one of the most frequent and opportunistic, often resulting in death.3 It is therefore important to identify patients with WG who are at risk of PCP in order that they receive primary antipneumocystis prophylaxis. To determine the factors associated with the occurrence of PCP in WG, we compared retrospectively a group of 12 patients with both WG and PCP, with all patients suffering from WG, but without PCP, followed in the same units over the same period.

Neuropsychological testing and (99m)Tc-ECD brain SPECT seem to be the most sensitive tools to detect subclinical CNS dysfunction in pSS. The strong correlation between cortical hypoperfusion in (99m)Tc-ECD brain SPECT and cognitive dysfunction suggests an organic aetiology of CNS dysfunction in pSS. These data should be confirmed in a larger study.

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