AJR. American journal of roentgenology
-
AJR Am J Roentgenol · Apr 1994
ReviewProliferative and constrictive bronchiolitis: classification and radiologic features.
The small airways of the lung consist of the terminal bronchioles, respiratory bronchioles, and alveolar ducts. A recently introduced pathologic classification system divides bronchiolitis into proliferative and constrictive types. ⋯ Proliferative bronchiolitis is characterized by air-space opacification, whereas constrictive bronchiolitis tends to be associated with lobular areas of decreased attenuation and airway dilatation. The purpose of this essay is to illustrate the radiographic and CT features of these two varieties of bronchiolitis.
-
AJR Am J Roentgenol · Apr 1994
ReviewCT of the lung in patients with pulmonary emphysema: diagnosis, quantification, and correlation with pathologic and physiologic findings.
Pulmonary emphysema is a pathologic diagnosis. However, the diagnosis can be made with relative certainty on the basis of clinical and radiologic criteria. ⋯ Additionally, features of other obstructive lung diseases may overlap. From the clinician's standpoint, the main value of differentiating between emphysema and other obstructive diseases of the airways (e.g., asthma and chronic bronchitis) is to (1) establish a prognosis and (2) guide the use of corticosteroid therapy by defining the degree of reversibility that can be expected in patients with limitation in air flow.