Progression
There were 652 individuals (38.4% of total cohort) that had a T4 CT scan, of which 15 (2.3%) had baseline (T0) CT scans with ILA. From that group, 3 (20%) had resolution of ILA, 5 (33.3%) had stable findings, and 7 (46.7%) had progression on the T4 scan. Of the 3 individuals who had resolution of ILA, none died during the study period. In addition, of the 9 participants referred to pulmonary for ILA (described above), 4 had T4 scans available of which 3 (75%) had definite progression.Of the 35 (5.4%) with indeterminate ILA at baseline, there were 7 (20.0%) that progressed to ILA, 15 (43.0%) remained indeterminate and 13 (37.1%) resolved. Of the remaining 602 (92.3%) with no ILA, there were 10 (1.7%) that progressed to ILA and 30 (5.0%) that progressed to indeterminate ILA (Additional file 