A pulmonary artery pseudoaneurysm caused by concurrent chemoradiation therapy for lung cancer

Abstract

Pulmonary artery pseudoaneurysms are rarely associated with lung cancer, and to our knowledge, have never been reported as a complication of concurrent chemoradiation therapy for lung cancer. We here report on a 64-year-old man with stage IIIA lung cancer who achieved partial response with concurrent chemoradiation therapy. However, 11 weeks later, he presented with massive hemoptysis, and computed tomography revealed a pulmonary artery pseudoaneurysm. From the findings of this case, we conclude that a pulmonary artery pseudoaneurysm, although rare, warrants attention when concurrent chemoradiation therapy is performed for lung tumors adjacent to the pulmonary artery.

Keywords: Aneurysm; Concurrent chemoradiation; Lung cancer; Pulmonary artery.

Fig.1

Chest computed tomography findings

Fig.2

Computed tomography findings of the pulmonary artery before and after the occurrence of the pulmonary pseudoaneurysm