TABLE 4

Computed tomography (CT) analysis and comparison with bronchoalveolar lavage (BAL) results

Case numberLung regions involved by IPAdditional findingsRTRadiation pneumonitisCT patternBAL/biopsy pattern
1DiffusePleural effusion, increasing GGOs over timeYesYesDAD and OPNeutrophilic
2UR, LR, ML, LLYesYesOPNA
3URLung nodule increasing over timeYesNoNoduleLymphocytic (histology)
4DiffuseYesYesOP, cNSIPMixed
5DiffuseNoNAcNSIPMixed
6DiffusePre-existing lobular attenuation, excluding HPNoNAcNSIP and OPNA
7DiffuseMigratory pattern, pleural effusionNoNAMixed OP and cNSIP ± other unspecified ILDLymphocytic
8UR, ML, LLMigratory patternYesNoOPLymphocytic
9MR, LRMigratory patternYesYesOPMixed
10DiffuseYesYesOPMixed
11UR, MR, LR, ML, LLNoNAOP, cNSIPNA
12UR, MR, UL, MLMigratory patternYesNoOPNormal
13DiffuseYesYesOPMixed
14DiffusePerilymphatic micronodularity, peribronchovascular consolidation and mosaic perfusion patternNoNALIP, cNSIP, DADLymphocytic
15DiffuseMigratory pattern and pleural effusionYesNoOPMixed

IP: immune-related pneumonitis; RT: radiation therapy; BAL: bronchoalveolar lavage; UR: upper right; LR: lower right; ML: medium left; LL: lower left; MR: medium right; UL: upper left; GGO: ground-glass opacity; HP: hypersensitivity pneumonitis; NA: not available; DAD: diffuse alveolar damage; OP: organising pneumonia; cNSIP: cellular nonspecific interstitial pneumonia; LIP: lymphoid interstitial pneumonia; ILD: interstitial lung disease.