Summary The international classification of idiopathic interstitial pneumonia published in includes seven clinical-pathologic entities distinguished by their clinical features, aspect on high-resolution computed tomography, and histopathologic findings on lung biopsy. These seven entities are idiopathic pulmonary fibrosis with features typical of interstitial pneumonia , nonspecific interstitial pneumonia, cryptogenic organising pneumonia, respiratory bronchiolitis with interstitial lung disease, desquamative interstitial pneumonia, lymphocytic interstitial pneumonia, and acute idiopathic interstitial pneumonia with features of diffuse alveolar damage. This classification provides clearer diagnostic criteria for each entity, has fostered clinical research and therapeutic trials, and forms the basis for international guidelines on patient care. The classification is currently being revised in order to better integrate the recently identified syndrome of combined pulmonary fibrosis and emphysema, acute exacerbations of fibrosis, and new pathophysiologic and genetic findings. Elle est peu symptomatique . La pneumopathie interstitielle lymphocytaire  est une forme exceptionnelle de PID idiopathique.
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Summary The term fibrosing interstitial pneumonia covers several distinct entities, including usual interstitial pneumonia, non specific interstitial pneumonia acute interstitial pneumonia, desquamative interstitial pneumonia, and lymphoid interstitial pneumonia. Because of its very poor prognosis and different management, usual interstitial pneumonia, and particularly idiopathic forms idiopathic pulmonary fibrosis , must be distinguished from other forms of interstitial pneumonia.
The diagnosis of idiopathic pulmonary fibrosis is based on the CT or pathologic criteria of usual interstitial pneumonia, in the absence of asbestosis, chronic hypersensitive pneumonitis, and collagen vascular disease. Surgical biopsy may be necessary when these features are absent, given the overlap of CT findings between the different forms of interstitial pneumonia. In such cases, specific diagnosis of interstitial lung disease is based on a combination of clinical, radiological and histopathological findings.
Coupe scanographique de 1 mm passant par les bases pulmonaires. Bronchectasies et bronchiolectasies par traction. Le pronostic de la PINS est significativement meilleur que celui de la fibrose pulmonaire idiopathique. Le rayon de miel est toujours minime et a rarement une distribution basale. Silva et coll. Idiopathic pulmonary fibrosis: diagnosis and treatment.
International consensus statement. Care Med. International multidisciplinary consensus classification by the American Thoracic Society and the European Respiratory Society, principal clinico-pathological entities, and diagnosis].
Mal Respir. Radiology , , , Imaging , , 22 , AJR Am. Chest , , , Thorax , , 52 , Imaging , , 15 , Imaging , , 21 , J Comput Assist Tomogr , , 29 , Plus le rayon de miel est abondant et plus le pronostic est sombre.
Démarche diagnostique devant une pneumopathie interstitielle
Pneumopathie interstitielle aiguë
Pneumopathies interstitielles - PID