Ground-glass opacification/opacity (GGO) is a descriptive term referring to an area of increased attenuation in the lung on computed tomography (CT) with preserved bronchial and vascular markings. It is a non-specific sign with a wide etiology including infection, chronic interstitial disease and acute alveolar disease.
I hadn't heard of this until this new virus discussion started. I didn't realize that "ground glass opacification" can have so many cases.
didnt even know this existed:
herpes simplex virus (HSV) pneumonia