Ground - glass opacity - wikipedia Ground - glass opacity High - resolution CT : increase in density in areas of ground glass and air trapping in lower lobes in patients with hypersensitivity pneumonitis. In radiology, ground glass opacity ( GGO ) is a nonspecific finding on computed tomography ( CT ) scans that indicates a partial filling of air spaces in the lungs by exudate or transudate, as well as interstitial thickening or partial collapse of lung alveoli. Possible diseases The differential diagnosis of the many causes of GGO includes pulmonary edema, infections ( including cytomegalovirus and Pneumocystis carinii pneumonia ), various noninfectious interstitial lung diseases ( such as hypersensitivity pneumonitis, Hamman - Rich syndrome ), diffuse alveolar hemorrhage, and cryptogenic organizing pneumonia. References Jump up ^ Jannette Collins, MD ; Eric J. Stern, MD ( 1998 ). `` Ground glass opacity on CT scanning of the chest : What does it mean ? '' ( PDF ). Applied Radiology. Retrieved 2012 - 02 - 01. External links Ground - Glass Opacity of the Lung Parenchyma : A Guide to Analysis with High - Resolution CT Retrieved from `` https://en.wikipedia.org/w/index.php?title=Ground-glass_opacity&oldid=789399756 '' Categories : Radiologic signs Talk About Wikipedia Français Русский Edit links This page was last edited on 7 July 2017, at 02 : 57. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: what does ground glass appearance in lungs mean
Answer: indicates a partial filling of air spaces in the lungs by exudate or transudate, as well as interstitial thickening or partial collapse of lung alveoli