Cerebral embolism originating from intracardiac tumors represents a rare cause of stroke and has been documented in both adult and pediatric populations. We present a patient recently diagnosed with a right pulmonary hilum tumor, invading the pulmonary veins and the left atrium. Two consecutive episodes of large cerebral vessel occlusion in separate vascular territories occurred in the same day and were treated by mechanical thrombectomy. Embolic material retrieved on both occasions contained tumor fragments with peripheral endothelialization. To our knowledge, this is the first report with histological confirmation of cerebral embolism from an invasive extracardiac tumor.
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Contributors RP: endovascular procedures, manuscript drafting, image processing, and literature review. VL: pathology analysis and manuscript review. DM and JSR: endovascular procedures and manuscript review. RJ-L: patient care and manuscript review. MM, MS, VW, and RB: manuscript review.
Competing interests None declared.
Patient consent Obtained from next of kin.
Provenance and peer review Not commissioned; externally peer reviewed.