CTICasesIatrogenic Pulmonary Artery Tear
Imaging findings
Angiography and CT in an 11-year-old girl post-repair of truncus arteriosus demonstrate a stent in the left pulmonary artery. High-pressure balloon inflation resulted in a tear at the distal anastomosis, forming a large pseudoaneurysm that ruptured into the adjacent lung parenchyma, presenting as focal consolidation.
Key takeaways
Iatrogenic pulmonary artery tear or rupture is a rare but catastrophic complication of balloon angioplasty or stent placement, particularly in patients with congenital heart disease who have undergone multiple prior surgical repairs and have rigid, scarred vascular walls. It presents as sudden hemoptysis, active contrast extravasation, and pseudoaneurysm formation, requiring urgent surgical or endovascular repair.
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