(1)Ī 48 year old woman, engineer, smoker (25 packs/year) asymptomatic was, submitted to routine chest X-ray which disclosed alveolar infiltrate in the right upper and medium lobes.

As the use of the acronym BOOP may bring about a confusion with other diseases of the airways such as constrictive bronchiolitis (1) and significantly stress the bronchiolar component that may be found in other affections not associated to organizing pneumonia, it has progressively been less used (3) Use of the generic term organizing pneumonia has therefore been proposed, with modifications suitable for each case, for instance organizing pneumonia associated to rheumatoid arthritis, organizing pneumonia associated to viral pneumonia etc. In this last case it is preferably called cryptogenic organizing pneumonia (COP). This histo-pathological pattern may be associated with diseases of the conjunctive tissue, vasculitis, infections, pneumonitis by hypersensitivity, obstructive pneumonia, aspiration, addiction to systemic and inhaled drugs or toxins, chronic eosinophylic pneumonia and hematological malignancies or be idiopathic ,( 8). It appears predominantly in the alveolar ducts and alveoli and often also impairs the bronchioles (1, 7). Bronchiolitis obliterans with organizing pneumonia (BOOP) is characterized by the presence of plugs in the conjunctive tissue within the distal airspaces. In 1983, Davison et cols, described a similar disease entity they called cryptogenic organizing pneumonia. HRCT: High resolution computerized tomographyĪNCA: Anti-Neutrophil Cytoplasmic Antibodyīrochiolitis obliterans with organizing pneumonia was described in 1985 by Epier et cols, as a distinct disease with clinical, radiological and prognostic manifestations differing from other pulmonary interstitial diseases. Key words: bronchiolitis obliterans organizing pneumonia, bronchiolitis obliteransĪcronyms and Abbreviations utilized in this textīOOP: Brochiolitis obliterans with organizing pneumonia The patient had a positive evolution with resolution of the radiographic finding. Diagnosis of Bronchiolitis obliterans organizing pneumonia was made by means of videothoracoscopy whereupon treatment with corticosteroids was begun. The differential diagnoses of neoplasms, sarcoidosis, granulomatous diseases and tuberculosis were considered. years-old woman, asymptomatic, presented with radiographic findings of patchy airspace consolidation with nodular opacities in the upper right lobe, middle lobe and lingula. Gabriela Addor Andreia Salarini Monteiro David Henrique Nigri Wilhermo Torres Carlos Alberto de Barros Franco Disciplina de Pneumologia e na ClÌnica Barros Franco-Consultoria em Aparelho Respiratório Work carried out Escola Médica de Pós-Graduação da PUC-RJ. Bronchiolitis obliterans organizing pneumonia * *

Boop pneumonia x rays