What exactly is "ground glass", if this exists?
How do GGOs relate to "ground glass"? Rather than "ground glass", why not call these light-coloured or gray or transculent opacities?
According to Isabel Oliva Cortopassi, MD, chief of thoracic imaging at Yale Medicine and an associate professor of radiology and biomedical imaging, ground glass opacities (GGOs, for short) indicate abnormalities in the lungs. "Ground glass opacities [are] a pattern that can be seen when the lungs are sick," says Dr. Cortopassi. She adds that, while normal lung CT scans appear black, an abnormal chest CT with GGOs will show lighter-colored or gray patches.