Figure 2 : Suggested investigation strategy to diagnose chILD. Adapted from [71, 79]. chILD, childhood interstitial lung disease; CT, computerized tomography; ABCA3, ATP-binding cassette sub-family A member protein 3; SFTPB, Surfactant Protein B; SFTPC, surfactant protein-C; NKx2-1, NK2 homeobox 1; TTF1, thyroid transcription factor 1; CSF2RA, colony stimulating factor 2 receptor subunit alpha; CSF2RB, colony stimulating factor 2 receptor subunit beta; DNA, deoxyribonucleic acid; ACE, angiotensin converting enzyme; CD1a, cluster of differentiation 1a; CD4, cluster of differentiation 4; CD8, cluster of differentiation 8; VATS, video assisted thoracoscopic surgery.