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This line stands out against the adjacent, uniformly dense lung fields caused by extensive calcifications. [2] Computed Tomography (CT): CT scans provide a more detailed view, revealing a clear demarcation between the calcified lung parenchyma and the spared subpleural area. The black pleura sign is evident as a peripheral lucent rim beneath ...
The endometrial tissue settles in the lung parenchyma or pleura. [8] A review of autopsy data showed that patients with endometriosis have bilateral pulmonary lesions, which supports the vascular embolisation theory. The pleural and/or diaphragmatic lesions were always found on the left side, which supports the theory of coelomic metaplasia.
Fluid in space between the lung and the chest wall is termed a pleural effusion. There needs to be at least 75 mL of pleural fluid in order to blunt the costophrenic angle on the lateral chest radiograph and 200 mL of pleural fluid in order to blunt the costophrenic angle on the posteroanterior chest radiograph. On a lateral decubitus, amounts ...
Pneumonia can lead to the development of a lung abscess, [4] which is a pus-containing necrotic lesion of the lung parenchyma (lung tissue). [5] On CT scan of the chest, a lung abscess appears as an intermediate- or thick-walled cavity with or without an air-fluid level (a flat line separating the air in the cavity from the fluid). [4]
Parenchymal hamartoma of the lung. The surrounding lung falls away from the well-circumscribed mass, a typical feature of these lesions. The hamartoma shows a variegated yellow and white appearance, which corresponds respectively to fat and cartilage. About 5–8% of all solitary lung nodules and about 75% of all benign lung tumors, are ...
Figure B shows lungs with asbestos-related diseases, including pleural plaque, lung cancer, asbestosis, plaque on the diaphragm, and mesothelioma. Extensive fibrosis of pleura and lung parenchyma The arrow points to an uncoated segment of asbestos fiber in this ferruginous body.
The thickness ranges from less than 1 mm up to 1 cm or more and may extend for a few millimeters into the lung parenchyma. [5] Fibrous strands ("crow's feet") extending from the thickened pleura into the lung parenchyma can be often detected on CT scan. Diffuse pleural thickening develops 20 to 40 years after first exposure. [11]
The function of the lungs can also be affected by compression from fluid in the pleural cavity pleural effusion, or other substances such as air (pneumothorax), blood , or rarer causes. These may be investigated using a chest X-ray or CT scan , and may require the insertion of a surgical drain until the underlying cause is identified and treated.