Final answer:
Pneumonia is a disease that causes increased radiodensity in the lung fields due to inflammation and fluid accumulation. It is a common inflammatory disease of the respiratory tract characterized by symptoms such as shortness of breath, coughing, chest pain, and fever. A chest radiograph of a patient with pneumonia will show opaque patches or white areas in the lung fields.
Step-by-step explanation:
Pneumonia is a disease that causes increased radiodensity in the lung fields on an image due to inflammation and accumulation of fluid. It is a common inflammatory disease of the respiratory tract in which the alveoli become filled with fluid, inhibiting gas exchange. Pneumonia can be caused by viral or bacterial infections and is characterized by symptoms such as shortness of breath, coughing, chest pain, and fever. A chest radiograph of a patient with pneumonia will show opaque patches or white areas in the lung fields due to the presence of consolidations or pockets filled with fluid.