Brief report
Severe Churg–Strauss syndrome with mediastinal lymphadenopathy treated with interferon therapy

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Abstract

We report a case of severe Churg–Strauss syndrome (CSS) with mediastinal eosinophilic lymphadenopathy, with relapse after standard therapy with steroids and cyclophosphamide, subsequently treated with interferon (IFN) alpha 2b. Our report shows that mediastinal lymph nodes mimicking lymphoma may be one of the clinical manifestations of CSS. We also show that patients with CSS who are resistant to first-line therapy and for whom hypereosinophilia is thought to play an important role may benefit from treatment with IFN.

Introduction

The long-term prognosis for Churg–Strauss syndrome (CSS) is usually good, and cure or remission is obtained in a majority of patients [1]. However, some patients may relapse despite standard therapy; others may require prolonged maintenance treatment with steroids in order to avoid relapses or to control airway obstruction. Treatment may also be interrupted because of side effects. First-line treatment for CSS is prednisolone and cyclophosphamide [2]. When the standard therapy fails to control the disease or is associated with severe side effects, alternative options may include interferon α (IFN-α). We report a case of severe CSS with mediastinal eosinophilic lymphadenopathy that relapsed after a standard regimen but was successfully treated with IFN-α-2b.

Section snippets

Case report

In 1983, a 25-year-old woman developed severe asthma with hypereosinophilia (varying between 800 and 1500 cells/mm3, normal value 0.05–0.8 103/mm3). She also had a history of nasal polyps with allergic rhinitis and was suspected to have a Widal syndrome. She frequently received steroids for both asthma and allergic rhinitis. In July 1998, the woman presented with pericarditis and was treated with tapering doses of steroids. However, reducing the dose of prednisolone to 20 mg/day precipitated

Discussion

CSS is defined by the combined presence of at least four of the following six criteria [3]: asthma; eosinophilia >10%; history of allergy, mono-, or polyneuropathy; non-fixed pulmonary infiltrates; paranasal sinus abnormality; and extravascular eosinophils. Our patient met all of these criteria. Lymphadenopathy is very rare in CSS. In their cohort of 96 patients with CSS, Guillevin et al. [1] did not mention any patient with lymphadenopathy. Eosinophilic lymphadenopathy has only been described

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