Table 1.
Clinical, radiological, and PET/CT characteristics of the enrolled patients
| Characteristics | All patients | PAS | PTE | P value |
|---|---|---|---|---|
| Age (median, range, years) | 59 (15–88) | 50 (27–69) | 62 (15–88) | 0.053 |
| < 59, n | 23 | 11 | 12 | 0.011* |
| ≥ 59, n | 24 | 3 | 21 | |
| Gender, n | ||||
| Male | 29 | 9 | 20 | 0.812 |
| Female | 18 | 5 | 13 | |
| Symptom, n | ||||
| Dyspnea | ||||
| Yes | 19 | 8 | 11 | 0.128 |
| No | 28 | 6 | 22 | |
| Chest tightness | ||||
| Yes | 12 | 4 | 8 | 0.731 |
| No | 35 | 10 | 25 | |
| Chest pain | ||||
| Yes | 12 | 6 | 6 | 0.076 |
| No | 35 | 8 | 27 | |
| Cough | ||||
| Yes | 20 | 7 | 13 | 0.501 |
| No | 27 | 7 | 20 | |
| Hemoptysis | ||||
| Yes | 5 | 2 | 3 | 0.627 |
| No | 42 | 12 | 30 | |
| Fever | ||||
| Yes | 6 | 2 | 4 | 1.000 |
| No | 41 | 12 | 29 | |
| D-dimer level, n | ||||
| Abnormal | 39 | 9 | 30 | 0.087 |
| Normal | 7 | 4 | 3 | |
| Location, n | ||||
| With PT involved | 14 | 11 | 3 | < 0.001* |
| PT only | 2 | 1 | 1 | |
| PT and RPA | 3 | 3 | 0 | |
| PT and LPA | 1 | 1 | 0 | |
| PT, RPA, and LPA | 8 | 6 | 2 | |
| Without PT involved | 33 | 3 | 30 | |
| RPA | 16 | 2 | 14 | |
| LPA | 6 | 1 | 5 | |
| RPA and LPA | 11 | 0 | 11 | |
| Non-enhanced CT value (HU) | 36 (18–63) | 34 (18–47) | 39 (24–63) | 0.062 |
| < 36, n | 21 | 8 | 13 | 0.263 |
| ≥ 36, n | 26 | 6 | 20 | |
| Enhanced CT value (HU) | 49 (26–76) | 67 (31–76) | 45 (26–64) | < 0.001* |
| < 49, n | 23 | 3 | 20 | 0.024* |
| ≥ 49, n | 24 | 11 | 13 | |
| ΔCT value (HU) | 5 (0–44) | 25 (13–44) | 4 (0–18) | < 0.001* |
| < 20, n | 36 | 3 | 33 | < 0.001* |
| ≥ 20, n | 11 | 11 | 0 | |
| SUVmax | 2.0 (0.8–17.2) | 8.9 (3.0–17.2) | 1.8 (0.8–3.7) | < 0.001* |
| < 2.0, n | 21 | 0 | 21 | < 0.001* |
| ≥ 2.0, n | 36 | 14 | 12 |
PAS pulmonary artery sarcoma, PTE pulmonary thromboembolism, PT pulmonary trunk, RPA right pulmonary artery, LPA left pulmonary artery
*Indicated statistically significant