Solitary Lung Nodule or Mass A pulmonary nodule is defined as any pulmonary lesion that is well-defined, discrete, approximately circular, and 3 cm or less in diameter. The term mass is used for lesions greater than 3 cm in diameter. The differential…
Airspace consolidation is defined as replacement of gas within the airspaces by fluid, protein, cells, or other material. Consolidation is characterized on radiographs and computed tomography (CT) by the presence of one or more fairly homogeneous opacities associated with obscuration…
Radiography Technique Projections The standard radiographic views for evaluation of the chest are the posteroanterior (PA) and lateral projections with the patient standing; such projections provide the essential requirement for proper three-dimensional (3D) assessment ( Fig. 1.1 ). In patients…