OBLITERANT BRONCHIOLITIS WITH ORGANIZED P NEUMONIA

Obliterant Bronchiolitis is an anatomo-clinical entity known years ago . It is recognized as a evolutive form of different processes, includi ng Extrinsic Allergic Alveolitis, Pneumonitis due to gas inhalation, v iral processes and Rheumatoid Lung. It has been recently identified as a disease with specific characteristics in the context of interstitia l idiopathic pneumonia with bronchiolar involvement and a distinctive anatomo-pathological character. From the clinical and radiological poi nt of view it requires a broad differential diagnosis, which is confir med definitively in the anatomo-pathological exam obtained through min ithoracotomy. Therapeutic response to corticosteroids is good even tho ught it shows a trend to relapse when they are decreased or stopped. W e discuss the cases of three patients who were studied recently, showi ng their clinical, radiological and anatomopathological features toget her with the therapeutic response, which is positive, in different per iods of the evolution course.