Chapter 1 Focal Lung Diseases -- Ch 1-1 Nodule -- Ch 1-1a Solid nodule -- Ch 1-1b Ground-glass opacity nodule -- Ch 1-2 Mass -- Ch 1-3 Consolidation -- Ch 1-3a Lobar consolidation -- Ch 1-3b Nodular consolidation -- Ch 1-4 Reticular or linear pattern -- Ch 1-5 Comet tail sign -- Ch 1-6 CT halo sign -- Ch 1-7 Galaxy sign -- Ch 1-8 Reversed halo sign -- Ch 1-9 Tree-in-bud sign -- Ch 1-10 Gloved-finger or tooth-paste sign -- Ch 1-11 Decreased opacity with cystic airspace -- Ch 1-11a Decreased opacity with cystic airspace wall, cavity -- Ch 1-11b Decreased opacity with cystic airspace wall, cyst -- Ch 1-12 Decreased opacity without cystic airspace -- Ch 1-12a Decreased opacity without cystic airspace, mosaic perfusion -- Ch 1-12 b Decreased opacity without cystic airspace, airway disease -- Ch 1-12 Air crescent sign -- Ch 1-13 signet ring sign -- Chapter 2 Diffuse Lung Diseases -- Ch 2-1 Interlobular septal thickening -- Ch 2-1a Smooth thickening -- Ch 2-1b Nodular thickening -- Ch 2-2 Intralobular lines -- Ch 2-2a Intralobular lines with reticulation -- Ch 2-2b Intralobular lines with interlobular septal thickening -- Ch 2-2c Intralobular lines with ground-glass opacity -- Ch 2-3 Honeycombing -- Ch 2-3a Honeycombing with subpleural or basal predominance -- Ch 2-3b Honeycombing with upper lung zone predominance -- Ch 2-4 Small nodular or micronodular pattern -- Ch 2-4a Small nodular lesions with centrilobular distribution -- Ch 2-4b Small nodular lesions with perilymphatic distribution -- Ch 2-4c Small nodular lesions with random (military) distribution -- Ch 2-4d Multiple nodular or mass or mass-like pattern -- Ch 2-5 Ground-glass opacity with reticulation -- Ch 2-5a Ground-glass opacity with reticulation and traction bronchiectasis -- Ch 2-5b Crazy-paving appearance -- Ch 2-6 Ground-glass opacity without reticulation -- Ch 2-6a Ground-glass opacity without reticulation and peripheral or patchy distribution -- Ch 2-6b Ground-glass opacity without reticulation and small nodules -- Ch 2-6c Ground-glass opacity without reticulation and diffuse distribution -- Ch 2-7 Consolidation -- Ch 2-7a Consolidation with diffuse distribution -- Ch 2-7b Consolidation with subpleural distribution -- Ch 2-8 Decreased opacity with cystic airspace -- Ch 2-8a Decreased opacity with cystic airspace and cystic wall (cavity and cysts) -- Ch 2-8a1 Decreased opacity with cystic airspace and cystic wall, cavities -- Ch 2-8a2 Decreased opacity with cystic airspace and cystic wall, cysts -- Ch 2-8b Decreased opacity without cystic airspace but without wall (emphysema) -- Ch 2-9 Decreased opacity without cystic airspace, mosaic attenuation -- Ch 2-9a Decreased opacity without cystic airspace, vascular -- Ch 2-9b Decreased opacity without cystic airspace, obstructive airway diseases -- Ch 2-10 Decreased opacity without cystic airspace, airway diseases.