A chronic thromboembolic pulmonary hypertension catch-22 situation: inferior vena caval filter plays a pivotal role in an unlikely situation.

Chronic thromboembolic pulmonary hypertension (CTEPH) is a rare clinical entity that occurs in a small subset of acute pulmonary embolism (PE) cases and is surgically cured by pulmonary endarterectomy. We report a case of a 44-year-old female with a complex history of CTEPH treated by thromboendarterectomy who presented with a subdural hematoma while on warfarin. The patient eventually recovered by a multidisciplinary approach, use of inferior vena caval filter, and effective anticoagulation management.