<unk><unk><unk>  (GGO) is seen as increased<unk>  of lung without obscuration of the bronchial and vascular markings.<unk><unk><unk>  can represent partially filled alveoli, active inflammation, or fine fibrosis below the resolution of<unk>  images  .
Ground glass opacification on CT
Cephalization on chest x-ray
Squamous cell carcinoma of the lung biopsy
Solitary pulmonary nodule x ray
Elevated alpha-fetoprotein
Sarcomatoid carcinoma of the lung x ray
Adenocarcinoma of the lung biopsy
Hamman-Rich syndrome chest x ray