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CASE REPORTS
JOURNAL ARTICLE
Churg Strauss syndrome associated with montelukast--case report.
Churg-Strauss Syndrome (allergic granulomatous angiitis) is a rare systemic and pulmonary vasculitis. We report the case of a 62 years old female, non-smoker, with a 20 years history of moderate persistent asthma treated with Salmeterol/Fluticasone 50/500 microg bid for 5 years and supplemental Montelukast in the past 5 months. The patient was admitted in our hospital with fever, malaise, sensory deficits in the lower extremities, diffuse musculoskeletal and thoracic pain. Blood eosinophil was 38% of her total WBC, thoracic computed tomography evidenced ill-defined groundglass attenuation predominantly involving the lateral segment of the middle lobe. Pulmonary infiltrates with eosinophilia can be used to define eosinophilic lung diseases. We made the differential diagnosis of eosinophilic lung disease: acute or chronic eosinophilic pneumonias, allergic bronchopulmonary aspergillosis, Loffler syndrome, Churg-Strauss syndrome, bronchocentric granulomatousis, idiopathic hypereosinophilic syndromes. Bronchoalveolar lavage showed 14.6% eosinophils. Few days after hospital admission patient experienced nausea, vomiting and diarrhea. She underwent a digestive endoscopy, which showed eosinophilic enteritis according to colon biopsy. Nasal mucosa biopsy found granulomas. Anti-neutrophil cytoplasmatic antibody (ANCA) was positive at 1:20. She displayed more than four American College of Rheumatology (ACR) criteria for Churg-Strauss Syndrome (developed while she was receiving montelukast therapy). Discontinuation of Montelukast and association of oral prednisone (1 mg/kgc) induced rapid improvement of symptoms and rapid decrease of peripheric eosinophils (72 hours). This case report illustrates the importance of early diagnosis of Churg-Strauss syndrome and the possible pathogenic link between leukotriene receptor antagonist use and CSS development.
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