Pulmonary Artery Pseudoaneurysm (PAA) in a Patient With Advanced Lung Cancer After Radiotherapy: A Potentially Fatal Complication.

Pulmonary artery pseudoaneurysms (PAAs) are exceedingly uncommon. It is a life-threatening diagnosis, and often associated with poor long-term prognosis. We report a case of PAA in a 74-year-old man presenting with severe respiratory failure and haemoptysis with a history of advanced lung cancer. Though the intent was to manage the PAA with coil embolisation, this was unsuccessful and the patient passed away 72 h after hospital admission. There is limited evidence for treatment of PAA, and once a patient is symptomatic, has a high mortality.