Childhood interstitial lung disease diagnostic assessment based on computed tomography scan pattern
| Elementary lesions | Distribution | Suspected diagnoses |
| GGO | Dense, diffuse | Inherited surfactant disorders |
| GGO, peripheral traction cysts | Diffuse | Inherited surfactant disorders |
| GGO, peripheral and/or parenchymal traction cysts, traction bronchiectasis, reticulations | Inherited surfactant disorders (older age); autoinflammatory disorders | |
| Diffuse (sometimes ill-defined centrilobular) nodules, diffuse GGO ± alveolar consolidation | Patchy | Diffuse alveolar haemorrhage |
| GGO, cysts, honeycombing and reticulations | Peripheral | Connective tissue diseases, systemic and autoimmune diseases |
| GGO | Paramediastinal, paracardial, middle lobe, lingula (usual); others (aberrant) | Persistent tachypnoea of infancy/neuroendocrine cell hyperplasia of infancy |
| GGO and air trapping | Centrilobular | Hypersensitivity pneumonitis |
| Reversed halo sign | Organising pneumonia | |
| Crazy paving | More intense in lower lobes | Pulmonary alveolar proteinosis |
| Micronodules, hilar lymphadenopathies | Lymphatic distribution | Sarcoidosis |
| Centrilobular nodules | Diffuse | Hypersensitivity pneumonitis |
GGO: ground-glass opacities.