| Total n = 46 (%) | Age < 70 n = 26 (%) | Age ≥ 70 n = 20 (%) | ||
|---|---|---|---|---|
| Symptoms or signs | ||||
| Shock | 0 (0) | 0 (0) | 0 (0) | - |
| Syncope | 0 (0) | 0 (0) | 0 (0) | - |
| Low blood pressure | 1 (2.2) | 0 (0) | 1 (5.0) | - |
| Hemoptysis | 5 (10.9) | 4 (15.4) | 1 (5.0) | 0.262 |
| Wheezing | 21 (45.7) | 13 (50.0) | 12 (60.0) | 0.500 |
| Chest pain | 26 (56.5) | 19 (73.1) | 7 (35.0) | 0.010 |
| Rale | 32 (69.6) | 20 (76.9) | 12 (60.0) | 0.216 |
| Tachypnea | 33 (71.7) | 21 (80.7) | 12 (60.0) | 0.121 |
| Dyspnea | 36 (80.4) | 21 (80.7) | 16 (80.0) | 0.880 |
| Location of pulmonary embolism | 0.373 | |||
| Unilateral | 33 (71.7) | 20 (76.9) | 13 (65.0) | |
| Bilateral | 13 (28.3) | 6 (23.1) | 7 (35.0) | |
| Chest X ray findings | 0.097 | |||
| Normal | 10 (22.7) | 4 (15.4) | 6 (30.0) | |
| Westermark sign | 0 (0) | 0 (0) | 0 (0) | |
| Hampton hump | 1 (2.3) | 0 (0) | 1 (5.0) | |
| Fleischner sign | 0 (0) | 0 (0) | 0 (0) | |
| Pleural effusions or infiltrates | 23 (52.3) | 17 (65.4) | 6 (30.0) | |
| Calcification | 12 (27.3) | 5 (19.2) | 7 (35.0) | |
| Chest CT-scans findings | 0.415 | |||
| Lobar | 37 (80.4) | 22 (84.6) | 15 (75.0) | |
| Central | 0 (0) | 0 (0) | 0 (0) | |
| Lobar + central | 9 (19.6) | 4 (15.4) | 5 (25.0) | |