CTICasesChronic Thromboembolic Pulmonary Hypertension (CTEPH) with PFO
Imaging findings
Pulmonary filling defects consistent with chronic clot, mosaic attenuation (due to perfusion differences), and a Patent Foramen Ovale (PFO) allowing paradoxical embolism.
Key takeaways
In patients with stroke and pulmonary hypertension, always evaluate for CTEPH and the presence of a PFO that may be forced open by elevated right-sided pressures.
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