Table 2.
Characteristics of the 893 SPN detected in the imaging tests carried out in the study, and the description of relevant variables of patients with an SPN for both chest radiograph and CT
| CHARACTERISTICS | CHEST RADIOGRAPH | CT | ||||
|---|---|---|---|---|---|---|
| N | % | 95 % CI | N | % | 95 % CI | |
| NODULE | ||||||
| Diameter (mm) | ||||||
| < 8 | 168 | 34.9 | (30.7-39.4) | 212 | 51.3 | (46.4-56.2) |
| > 8 | 287 | 59.7 | (55.1-64.1) | 188 | 45.5 | (40.6-50.5) |
| Not specified | 25 | 5.2 | (3.4-7.6) | 13 | 3.1 | (1.7-5.3) |
| Localization | ||||||
| Upper lobe | 262 | 54.5 | (50.0-60.0) | 198 | 48.1 | (43.1-53.0) |
| Lower lobe | 39 | 8.1 | (5.8-10.9) | 50 | 12.1 | (9.1-15.7) |
| Middle lobe | 160 | 33.3 | (29.1-37.7) | 150 | 36.4 | (31.8-41.3) |
| Not specified | 20 | 4.2 | (2.6-6.3) | 14 | 3.4 | (1.9-5.6) |
| Border | ||||||
| Smooth border or well defined border | 128 | 26.6 | (22.7-30.8) | 88 | 21.4 | (17.5-25.6) |
| Irregular or not well defined | 144 | 29.9 | (25.9-34.2) | 151 | 36.6 | (32.0-41.5) |
| - Spiculation | 62 | 43.1 | (34.8-51.6) | 44 | 29.1 | (22.0-37.1) |
| - Lobulation | 33 | 22.9 | (16.3-30.7) | 41 | 27.2 | (20.2-35.0) |
| - Other | 49 | 34.0 | (26.3-42.4) | 66 | 43.7 | (35.7-52.0) |
| Not specified | 209 | 43.5 | (39.0-48.0) | 173 | 42.0 | (37.2-46.9) |
| Opacity on CT | ||||||
| Solid | 225 | 54.6 | (49.7-59.5) | |||
| Ground glass | 25 | 6.1 | (4.0-8.8) | |||
| Calcification | 16 | 3.9 | (2.2-6.2) | |||
| Partly solid | 14 | 3.4 | (1.9-5.6) | |||
| Not specified | 132 | 32.0 | (27.6-36.8) | |||
| PATIENT | ||||||
| Previous malignancy | ||||||
| No | 317 | 65.9 | (61.5-70.1) | 288 | 69.9 | (65.2-74.3) |
| Yes | 164 | 34.1 | (29.9-38.5) | 124 | 30.1 | (25.7-34.8) |
| Smoking habit | ||||||
| No | 100 | 20.8 | (17.2-24.7) | 86 | 20.9 | (17.0-25.1) |
| Former and current | 284 | 59.0 | (54.5-63.5) | 249 | 60.4 | (55.5-65.2) |
| Not specified | 97 | 20.2 | (16.7-24.0) | 77 | 18.7 | (15.0-22.8) |
| Total | 481 | 100.0 | 412 | 100.0 | ||