Foods that have roughly the same number of calories from fats, calories, and protein will be found closer to the center of the pyramid. Read more about the Caloric Ratio Pyramid. Caloric Ratio Pyramid for Grapefruit, raw, pink and red, all areas. This feature requires Flash player to be installed in your browser.
Causes of Pleural Thickening. Pleural thickening is a condition of the lungs that is most often caused by the long term exposure and inhalation of asbestos particles which then settle on the pleura, or pleural membrane (the thin area surrounding the lungs) causing the area to thicken, calcify and/or scar.
The pleural cavity is the area between the lungs and inner chest wall. Pleurisy is a common complication of several different medical conditions, the most pervasive being a viral infection of the lower respiratory system.Other causes of pleurisy include: 1  Bacterial infections such as pneumonia and tuberculosis.2  A chest wound that punctured the pleural cavity. 3  A pleural tumor. 4  Autoimmune disorders like lupus and rheumatoid arthritis. 5  Sickle cell anemia. 6  Pancreatitis. 7  Pulmonary embolism.ther causes of pleurisy include: 1  Bacterial infections such as pneumonia and tuberculosis. 2  A chest wound that punctured the pleural cavity. 3  A pleural tumor. 4  Autoimmune disorders like lupus and rheumatoid arthritis.