A 49-year-old man presented with intermittent hemoptysis from a traumatic pulmonary artery pseudoaneurysm 30 years following a thoracic gunshot wound. The patient was asymptomatic for 28.5 years, when he began experiencing recurrent hemoptysis, chest pain, and a cough. A left lower lobe mass on chest x-ray film was investigated with contrast-enhanced computed tomography and pulmonary angiogram confirming a 1.5-cm pseudoaneurysm. Intraluminal coil embolization was attempted, but a left lower lobectomy was ultimately necessary to treat persistent hemoptysis.