Chest radiograph in lymphomatoid granulomatosis: comparison with Wegener granulomatosis

A form of angiitis and granulomatosis principally involving the lung was identified as a variant form of Wegener granulomatosis only 15 years ago. Recent experience indicates that the most common form of pulmonary angiitis and granulomatosis is lymphomatoid granulomatosis. Chest radiographs of 16 patients with this condition were reviewed and the findings compared with those of Wegener granulomatosis. The frequency and distribution of nodular masses, cavitation, and migratory lesions were similar in the two disorders, but reticulonodular infiltrates occurred only in lymphomatoid granulomatosis. The study suggests that lymphomatoid granulomatosis and Wegener granulomatosis occasionally can be distinguished by radiographic criteria. Although radiologic patterns will suggest the diagnosis of pulmonary angiitis and granulomatosis, the specific diagnosis of lymphomatoid granulomatosis must rely on clinical, immunologic, and pathologic evidence. Accurate differentiation is essential since treatment of Wegener granulomatosis with cyclophosphamide is highly effective while treatment of lymphomatoid granulomatosis is infrequently successful.
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