Abstract Fine reticular opacities are reliable evidence of interstitial lung disease that requires consideration of a variety of acute and chronic diseases. Acute interstitial disease is most often the result…

Abstract Coarse reticular opacities are the result of lung destruction caused by retracting fibrosis, which also produces cystic spaces. This combination of coarse reticular opacities and cystic spaces is better…

Abstract Atelectasis is loss of lung volume and a very common observation, with an appearance on the chest x-ray that is often nonspecific, but shift of normal structures may confirm…

Abstract The proximal right and left pulmonary arteries and proximal bronchi account for the appearance of the hila on the chest x-ray, but the arteries are crossed by the pulmonary…

Abstract Middle mediastinal masses are usually recognized by alteration of normal mediastinal contours that may be closely related to the trachea, esophagus, great vessels, and lymph nodes. Lymphadenopathy is a…

Abstract Diffuse bilateral confluent air space opacities with air bronchograms may result from alveolar edema, pneumonia, or hemorrhage. Associated findings such as cardiac enlargement and pleural effusions help confirm the…

Abstract Neural tumors are the most common primary tumors in the posterior mediastinum, but metastases, lymphoma, and primary bone tumors do occur in this location. Vertebral fractures often have associated…

Abstract Segmental and lobar consolidations are the result of alveolar filling in contrast with lobar or segmental atelectasis, which is the result of alveolar collapse. Atelectasis results in loss of…

Abstract Widening of the mediastinum is a common observation that may be related to patient body habitus or atherosclerotic dilatation of the aorta and great vessels, but there may also…

Abstract Anterior mediastinal masses are detectable on chest x-rays when they distort the normal mediastinal contours or fill the retrosternal clear space on the lateral view. CT is often required…