Rare case report of main pulmonary artery occupying lesion: pulmonary artery intimal sarcoma

This case underscores the pivotal role of imaging in differentiating PAIS from thromboembolic conditions and highlights surgical resection as the cornerstone of treatment. Although the prognosis of PAIS remains poor, complete surgical excision may extend survival, emphasizing the importance of early multidisciplinary collaboration and long-term monitoring. This report advocates for increased clinical suspicion of PAIS in cases of refractory dyspnoea to reduce diagnostic delays.