Topography of Ischemic Strokes in Cancer-Associated Non-Bacterial Thrombotic Endocarditis: A Single-Institution Descriptive Case Series
Journal of Stroke and Cerebrovascular Diseases（2024）
Department of Neurology | Department of Hematology Oncology | Department of Radiology | Department of Cardiovascular Diseases | Department of Quantitative Health Sciences
Abstract
Background Very limited data indicate that patients with stroke from cancer-associated NBTE (Ca-NBTE) exhibit a characteristic pattern of widely distributed ischemic lesions of varying sizes. Methods An electronic search of Mayo Clinic records (03/31/2002-06/30/2022) with ensuing manual review of brain magnetic resonance imaging (MRI) was performed to identify topographic characteristics of stroke from Ca-NBTE. Results In 112 patients with Ca-NBTE, 92 (82.1%) had a stroke and 84 (76.5%) had an MRI available for analysis (mean age 62.7±9.2, 57 women). 64 (76.2%) patients had ischemic strokes in both cerebral hemispheres, 10 (11.9%) had isolated left hemispheric infarcts, and 7 (8.3%) had isolated right hemispheric infarcts. Strokes involving both the anterior and posterior circulation were seen in 66 (78.6%) patients. Disseminated small, medium, and large ischemic strokes (Type IV) were seen in 57 (67.8%), multiple punctate disseminated strokes (Type III) in 14 (16.7%), multiple strokes in a single vascular territory (Type II) in 7 (8.3%), and a single ischemic stroke (Type I) in 6 (7.1%) patients. Strokes were most commonly observed in the middle cerebral artery territories – on the right in 65 (77.4%) and on the left in 68 (81.0%) patients. Strokes within the right posterior cerebral artery territory were observed in 54 (64.3%) and the left posterior cerebral artery territory in 54 (64.3%) patients. 46 (54.8%) patients had strokes in the right cerebellum and 50 (59.5%) had strokes in the left cerebellum. Only 5 patients had strokes in the right brainstem and 3 in the left brainstem. Discussion Ca-NBTE is most commonly associated with multifocal bihemispheric ischemic strokes of varying sizes involving both the anterior and posterior circulation, but solitary infarcts or infarcts confined to a single vascular territory can also be seen.
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Key words
Cancer,non-bacterial thrombotic endocarditis,stroke topography
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