Pulmonary Alveolar Proteinosis

Abstract
SINCE the report, by Rosen, Castleman and Liebow,1 of the histologic entity of pulmonary alveolar proteinosis a variety of syndromes have been described. The clinical presentations have ranged from an asymptomatic pulmonary infiltrate, incidentally discovered,2 to an unexplained recurrent fever of one and a half years' duration.3 The roentgenograms of the chest in most reported cases have shown a perihilar, granular infiltrate radiating to the lower fields of the lung — the area of the lung with the greatest radiodensity. In some patients, however, unilateral infiltrations, patchy infiltrations and even cavitary lesions2 have been described. The nonspecific clinical and x-ray . . .

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