713 - Interventional Management of Pulmonary Artery Pseudoaneurysms: A Case-based Review

Monday, April 13, 2026

5:03 PM - 5:09 PM ET

Abstract Presenter(s)

HB

Harika Barri, MD

Post Doctoral Fellow
University of Washington, United States

Author/Co-author(s)

AT

Ai Phuong Tong, MD, PhD

Nuclear Medicine Resident
University of Washington, United States
PK

Parveer Kaur, BA

Medical Student (MS3)
University of Washington School of Medicine, United States
MA

Matthew Abad-Santos, MD

Assistant Professor
University of Washington, United States
AS

Avik Som, MD, PhD

Assistant Professor
University of Washington, United States
CH

Charles Hua, MD

Assistant Professor
University of Washington, United States
Hugh McGregor, MD

Associate Professor
University of Washington, United States

Learning Objectives:

To review interventional strategies for managing pulmonary artery pseudoaneurysms (PAPs).

To highlight case-based decision-making when lesion anatomy or vascular access challenges limit conventional approaches.

To discuss outcomes and technical considerations of stent-assisted, percutaneous, and endovascular embolization.

Background: Pulmonary artery pseudoaneurysms are a rare but life-threatening causes of hemoptysis. Advances in embolic materials, stent-grafts, and image guidance have expanded minimally invasive treatment options. Management requires tailoring the approach to lesion morphology, hemodynamics, and patient comorbidities.

Clinical Findings/Procedure Details: Three patients with PAPs of varied etiologies were reviewed.

Case 1: An 82-year-old man with COPD and a central PAP underwent stent graft placement across the lobar pulmonary artery with adjunctive coil embolization, excluding the pseudoaneurysm while maintaining distal perfusion.

Case 2: A 42-year-old woman with metastatic melanoma and a large right lower lobe PAP not amenable to catheterization underwent CT-guided direct sac puncture. Coil and NBCA embolization achieved immediate and durable occlusion.

Case 3: A 26-year-old man with traumatic peripheral PAP from a gunshot wound underwent selective catheter-directed coil embolization.

All cases achieved technical success without intraprocedural complications. One patient died during follow-up from unrelated pulmonary causes.

Conclusion and/or Teaching Points: Pulmonary artery pseudoaneurysms can be effectively managed with tailored interventional approaches. Stent-assisted embolization, percutaneous direct sac access, and conventional coil embolization may each provide safe and durable exclusion when selected according to lesion anatomy and access feasibility. These cases illustrate that successful management of PAPs depends on procedural flexibility, thoughtful use of advanced imaging, and a broad selection of embolic agents tailored to lesion anatomy and clinical context.