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  • Title: Mediastinal mass and hilar adenopathy: rare thoracic manifestations of Wegener's granulomatosis.
    Author: George TM, Cash JM, Farver C, Sneller M, van Dyke CW, Derus CL, Hoffman GS.
    Journal: Arthritis Rheum; 1997 Nov; 40(11):1992-7. PubMed ID: 9365088.
    Abstract:
    OBJECTIVE: To assess the frequency and characteristics of hilar and mediastinal involvement in patients with Wegener's granulomatosis (WG). METHODS: A patient with WG presented with the unusual finding of a mediastinal mass, prompting a comprehensive review of 302 patient records from 2 WG registries to obtain evidence of hilar adenopathy or mediastinal masses. Clinic progress notes and findings of chest imaging studies (routine imaging and computed tomography) were reviewed for the presence of hilar lymphadenopathy, mediastinal masses, or mediastinal lymphadenopathy. All radiographs and surgical pathology specimens from these lesions were reviewed. RESULTS: Six examples of mediastinal or hilar involvement (2.0%) were identified among 302 patients with WG. Three of these 6 patients had mediastinal masses. One patient with a mediastinal mass also had mediastinal lymphadenopathy. Two of the patients with mediastinal masses had lung parenchymal lesions. The remaining 3 patients had enlarged hilar lymph nodes in addition to pulmonary parenchymal lesions. All of the patients were treated with corticosteroids and cytotoxic drugs. Followup information was available on all patients. Two patients died. In the remaining 4 patients, the mediastinal mass or hilar lymphadenopathy decreased in size or resolved after 2 months of immunosuppressive therapy. CONCLUSION: In the past, hilar adenopathy and/or mediastinal mass have been considered unlikely features of WG, and their presence has prompted consideration of an alternative diagnosis. Although this caution remains valuable, the present retrospective review of data from 2 large WG registries illustrates that such findings may rarely be a part of the spectrum of WG chest disease. Because these findings are uncommon, they necessitate consideration of a primary or concurrent infection or malignancy in the diagnostic evaluation.
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