Table 2 Radiographic patterns of 14 early-onset CIPs and 18 late-onset CIPs
|  | Overall N = 32 | Early-onset CIP N = 14 | Late-onset CIP N = 18 | P |
|---|---|---|---|---|
CIP location, n (%) | ||||
 Bilateral | 25 (78.1) | 10 (71.4) | 15 (83.3) | 0.459* |
 Left | 4 (12.5) | 3 (21.4) | 1 (5.6) |  |
 Right | 3 (9.4) | 1 (7.2) | 2 (11.1) |  |
Number of lobes involved, n (%) | ||||
 1–3 | 10 (31.3) | 5 (35.7) | 7 (38.9) | 0.712* |
 4–5 | 22 (68.7) | 9 (64.3) | 11 (61.1) |  |
Involves area of lung parenchyma | ||||
 ≤ 50% | 14 (43.8) | 4 (28.6) | 11 (61.1) | 0.087* |
 > 50% | 18 (56.2) | 10 (71.4) | 7 (38.9) |  |
CT findings at onset of CIP, n (%) | ||||
 Ground glass opacity | 29 (90.6) | 13 (92.9) | 16 (88.9) | 0.598* |
 Consolidation | 12 (37.5) | 7 (50.0) | 5 (27.8) |  |
 Reticulation | 14 (43.8) | 5 (35.7) | 9 (50.0) |  |
 Bronchitis/Nodularity | 15 (46.9) | 8 (57.1) | 7 (38.9) |  |
 Pleural effusion | 2 (6.3) | 0 (0) | 2 (11.1) |  |
Overall pattern of ILD, n (%) | ||||
 OP-like pattern | 11 (34.4) | 7 (50.0) | 4 (22.2) | 0.096* |
 NSIP-like pattern | 11 (34.4) | 2 (14.3) | 9 (50.0) |  |
 AIP/HP/Others-like pattern | 10 (31.3) | 5 (35.7) | 5 (27.8) |  |
Grades of CIP, n (%) | ||||
 1–2 | 10 (31.3) | 1 (7.1) | 9 (50.0) | 0.019* |
 3–5 | 22 (68.7) | 13 (92.9) | 9 (50.0) |  |
Prognosis, n (%) | ||||
 Survival | 23 (71.9) | 7 (50.0) | 16 (88.9) | 0.022* |
 Dead | 9 (28.1) | 7 (50.0) | 2 (11.1) |  |