Table 2 Comparison of high-resolution computed tomography findings among the patients with polymyositis, dermatomyositis, and clinically amyopathic dermatomyositis
| Â | PM-ILD (N = 11) | DM-ILD (N = 11) | CADM-ILD (N = 15) | p-value (adjusted by Holm method) | ||
|---|---|---|---|---|---|---|
PM vs DM | PM vs CADM | DM vs CADM | ||||
Distribution | Â | Â | Â | Â | Â | Â |
  Upper lobe dominant | 0 | 1 (9 %) | 0 | 1.00 | 1.00 | 1.00 |
  Lower lobe dominant | 11 (100 %) | 11 (100 %) | 15 (100 %) | - | - | - |
  Peri-bronchovascular | 9 (82 %) | 5 (45 %) | 6 (40 %) | 0.370 | 0.150 | 1.00 |
  Subpleural | 2 (18 %) | 7 (64 %) | 11 (73 %) | 0.161 | 0.0460 | 0.683 |
Shadow | Â | Â | Â | Â | Â | Â |
  Consolidatiuon | 7 (64 %) | 4 (36 %) | 7 (47 %) | 1.00 | 1.00 | 1.00 |
  Ground glass opacity | 1 (9 %) | 3 (27 %) | 3 (20 %) | 1.00 | 1.00 | 1.00 |
  Reticular shadow | 3 (27 %) | 5 (45 %) | 2 (13 %) | 1.00 | 1.00 | 0.280 |
  Irregular linear opacity | 0 | 0 | 4 (27 %) | 1.00 | 0.340 | 0.340 |
  Tractionbronchiectasis | 9 (82 %) | 7 (64 %) | 10 (67 %) | 1.00 | 1.00 | 1.00 |
  Cyst | 0 | 1 (9 %) | 1 (7 %) | 1.00 | 1.00 | 1.00 |
  Subpleural curve linear shadow | 4 (36 %) | 7 (64 %) | 7 (47 %) | 1.00 | 1.00 | 1.00 |
  Interlobular septa thickening | 1 (9 %) | 2 (18 %) | 4 (27 %) | 1.00 | 1.00 | 1.00 |
Others | Â | Â | Â | Â | Â | Â |
  Emphysema | 2 (18 %) | 1 (9 %) | 2 (13 %) | 1.00 | 1.00 | 1.00 |
  Volume loss | 9 (82 %) | 6 (55 %) | 13 (87 %) | 0.720 | 1.00 | 0.280 |