CTICasesBronchus Intermedius Compression by Dilated Pulmonary Artery
[...]. Bronchus Intermedius Compression by Dilated Pulmonary Artery. CTICases. Published April 14, 2017. https://str-case-explorer.pages.dev/c/hwccm
Imaging findings
Radiographs show marked cardiomegaly, massive dilation of the pulmonary arteries, and progressive atelectasis and consolidation of the right lower and middle lobes. Non-contrast CT reveals severe, slit-like compression of the bronchus intermedius between the giant, aneurysmal right pulmonary artery and the spine.
Key takeaways
Massive pulmonary artery dilation in patients with long-standing pulmonary hypertension or congenital heart disease (such as a Blalock-Taussig shunt) can cause severe extrinsic airway compression. This airway narrowing, reminiscent of post-pneumonectomy syndrome, leads to recurrent mucous plugging, ventilation issues, and atelectasis.
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