Advances in the Treatments of Systemic Vasculitides

Churg-Strauss syndrome associated with antiphospholipid antibodies in a patient with retinal vasculitis

CASE REPORT

We present the case of a 69-year-old woman with unilateral retinal vasculitis. Investigations showed asthma, rhinosinusitis, nasal polyposis, peripheral blood eosinophilia, increased sedimentation rate, proteinuria, and antiphospholipid antibodies. Anti-neutrophil cytoplasmic antibodies (ANCA) were negative.

DISCUSSION

Although her anti-neutrophil cytoplasmatic antibody (ANCA) status was negative, taking into account the other clinical and laboratory features, retinal vasculitis was thought to be an ocular manifestation of Churg-Strauss syndrome. Treatment was started with high-dose corticosteroids and anticoagulant therapy.

Clinical features and prognostic factors of Churg-Strauss syndrome

BACKGROUND/AIMS

Churg-Strauss syndrome (CSS) is a rare systemic necrotizing small-vessel vasculitis, with accompanying bronchial asthma, eosinophilia, and eosinophilic infiltration of various tissues. The purposes of our study were to characterize the clinical features of CSS and to identify factors associated with CSS prognosis in Koreans.

METHODS

Medical records were reviewed retrospectively for all physician-diagnosed CSS patients in the Seoul National University Hospital between January 1990 and March 2011.

RESULTS

Data from 52 CSS patients were analyzed. The respiratory tract was the most commonly involved organ (90.4%). Renal involvement was less frequent in antineutrophilic cytoplasmic antibody (ANCA)(-) patients than in ANCA(+) patients (p = 0.048). Clinical remission occurred in 95.3% of patients, but 16.3% of them relapsed. Patients who maintained remission for more than 6 months were relatively older (median, 51 years) at diagnosis (p = 0.004), had been diagnosed in earlier stages (p = 0.027), showed more frequent respiratory involvement (p = 0.024) and generalized symptoms (p = 0.039), and showed less frequent cutaneous involvement (p = 0.030) than those who did not achieve persistent (> 6 months) remission. Patients who achieved persistent remission also showed higher C-reactive protein (CRP) levels (p = 0.031) than those who did not.

CONCLUSIONS

ANCA(-) CSS patients showed less frequent renal involvement. Characteristics of good responders were older age, diagnosis at earlier stages, less cutaneous involvement, more respiratory involvement, high CRP values, and more generalized symptoms.

Clinical manifestations and treatment of Churg-Strauss syndrome

Churg-Strauss syndrome (CSS) is a systemic necrotizing vasculitis affecting small to medium-sized vessels, and characterized by asthma, blood hypereosinophilia, and eosinophil-rich granulomatous inflammation of the respiratory tract. In the past few years the pathogenesis of the disease and its clinical manifestations have been clarified, fostering important advances in the treatment of CSS. Systemic corticosteroids are still considered the cornerstone of treatment. Many issues need to be addressed, such as how to maintain remission, prevent disease relapses, and treat refractory disease. This review provides a clinical overview of CSS and a summary of the current treatments and novel therapies.