Peripheral pulmonary artery pseudoaneurysms and massive hemoptysis

Area of Science:

• Interventional Radiology
• Pulmonary Medicine
• Vascular Imaging

Background:

• Massive hemoptysis necessitates prompt diagnosis and treatment.
• Bronchial angiography is a key diagnostic and therapeutic tool for hemoptysis.
• Pulmonary artery pseudoaneurysms are a potential complication or finding during these procedures.

Purpose of the Study:

• To determine the incidence and causes of pulmonary artery pseudoaneurysms in patients undergoing bronchial angiography for massive hemoptysis.
• To evaluate patient outcomes following embolization of these pseudoaneurysms.
• To establish optimal treatment strategies for pseudoaneurysms complicating hemoptysis.

Main Methods:

• Retrospective analysis of patients undergoing bronchial angiography for massive hemoptysis.
• Angiographic identification and characterization of pulmonary artery pseudoaneurysms.
• Assessment of embolization techniques, including bronchial and pulmonary artery approaches.
• Evaluation of clinical outcomes, including hemoptysis control and complications.

Main Results:

• Peripheral pulmonary artery pseudoaneurysms were identified in up to 11% of patients.
• Pseudoaneurysms were often visualized due to reversed flow in pulmonary artery branches.
• Embolization of only bronchial and nonbronchial systemic arteries was frequently insufficient for complete hemoptysis control.

Conclusions:

• Pulmonary artery pseudoaneurysms are an important consideration in patients with hemoptysis undergoing angiography.
• Direct occlusion of the pseudoaneurysm via a pulmonary artery approach is recommended for effective management.
• Combined embolization strategies may be necessary for optimal outcomes in complex cases.