Pulmonary hypertension (PH) due to pulmonary artery obstructions
| 4.1 Chronic thromboembolic PH | |
| 4.2 Other pulmonary artery obstructions | |
| 4.2.1 Sarcoma (high or intermediate grade) or angiosarcoma | |
| 4.2.2 Other malignant tumours Renal carcinoma Uterine carcinoma Germ cell tumours of the testis Other tumours | |
| 4.2.3 Non-malignant tumours Uterine leiomyoma | |
| 4.2.4 Arteritis without connective tissue disease | |
| 4.2.5 Congenital pulmonary artery stenoses | |
| 4.2.6 Parasites Hydatidosis |