ABSTRACT

The definition of organizing pneumonia has recently been differentiated from the diagnosis of bronchiolitis obliterans and expressed as a separate disease. Organizing pneumonia may present as idiopathic (cryptogenic) and secondary organizing pneumonia. Among the secondary causes, factors such as connective tissue diseases, viral infections, drug use and radiation therapy come to the fore. Men and women are generally equally affected. Symptoms are usually non-specific. Organizing pneumonias are radiologically characterized by areas of peribronchovascular consolidation. Bronchiolitis are small airway diseases that can be subdivided histopathologically into inflammatory and fibrotic bronchiolitis. It affects airways that do not have a cartilaginous structure and are smaller than 2 mm. There are direct and indirect findings radiologically. Findings are often non-specific. Centrilobular nodules of ground glass density, tree-in-bud appearance, bronchial wall thickening, bronchiectasis and air trapping areas are radiological findings that can be associated with bronchiolitis.

Keywords: Organizing pneumonia, bronchiolitis, computed tomography