Ct scan for abdomen showed lingular pleural parenchymal scarring? what causes this? could it be pulmonary embolism? have never had lung problems.

Scar: The scar is more likely to be due to a prior infection, e,g. inhalation of foreign material into the lingula followed by inflammation and scarring. It is unlikely to be due to embolism. Have a healthy diet, exercise, drink plenty of water, have safe sex, no tobacco alcohol weed or street drugs. Get HPV vaccine Nutrition: http://www.choosemyplate.gov/.