Abstract
Abstract AIMS People with primary CNS tumours are at increased risk of stroke. However, there is little guidance on stroke management. We investigated the types and timing of stroke in primary brain and meningeal tumours to inform their treatment. METHOD Patient data on stroke aetiology, timing, management and outcomes was collected from electronic medical records at King’s College Hospital between April 2012 to April 2022. A primary brain tumour was defined using the 2021 World Health Organisation Classification of Tumours of the Central Nervous System. RESULTS We identified 244 patients with a brain tumour and a stroke with a total of 317 strokes in the 10-year period (male:female = 48:52; median age, 62 years [IQR 51 – 74]). The most common brain tumours were meningiomas (43%) and glioblastomas (21%). 56% of strokes were ischaemic. Ischaemic strokes were most frequent within 30 days of brain tumour surgery (38%). Haemorrhages were more common in malignant tumours (p=4.7 x10 35% of haemorrhages were intratumoural. Strokes in malignant tumours: occurred closer to diagnosis (p=0.032); caused greater functional loss (mean Modified Rankin Scale change 2.00 vs 1.17, p 0.001); and had a higher mortality rate (HR 5.87, CI 3.41 - 10.11, p=1.8x10 Recurrent strokes occurred in 64 (26%) patients and were associated with tumour malignancy (p=0.016), radiotherapy (p=0.023) and chemotherapy (p=0.009). CONCLUSION Strokes in malignant brain tumours are more lethal, disabling and often recurrent in patients undergoing chemo and radiotherapy. Clinical trials are needed to improve outcomes of stroke in neuro-oncology patients.
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