Coexistence of arteriovenous malformation and meningioma in a single patient: Systematic review and illustrative case.

• Intracranial arteriovenous malformations (AVM) are rare vascular lesions consisting of fistulous connections between arteries and veins without normal intervening capillaries. • Meningiomas are the most common benign intracranial neoplasm, accounting for approximately 13–26% of all brain tumors. • Only 18 cases of concurrent intracranial AVMs and meningiomas were reported in the literature with generally favorable outcomes owing to the benign nature of both these entities. • Further reporting of similar cases should help elucidate the exact mechanism by which these co-exist in a single patient. The coexistence of intracranial arteriovenous malformation (AVM) and meningioma in a single patient is seldom reported, so the clinical profile, optimal management, and outcomes of these patients are mostly unknown. We performed a systematic review of the SCOPUS and PubMed databases for case reports and case series on patients with both intracranial AVMs and meningiomas. Data on demographics, clinical characteristics, surgical management, and outcomes were collected. A total of 18 cases were reported in the literature, including the present case. The mean age at presentation was 54 years (range of 15–70 years), with no gender predilection. Most of the meningiomas and AVMs were frontal in location, and more than half of the lesions were contiguous. The most common presenting symptoms were seizures (67%), headache (44%), and weakness (33%). Majority of the patients underwent single stage meningioma and AVM excision (44%), followed by staged meningioma excision then AVM excision (17%) and meningioma excision only (17%). In all, 94% (17/18) of the meningiomas were excised compared to 72% (13/18) of the AVMs. Outcomes were reported in 15 patients; 80% were favorable, but there were 2 deaths and 1 tumor recurrence after 5 years. The coexistence of an intracranial AVM with a meningioma is recognized but rarely reported in the literature. Individualized treatment should be employed in managing patients with concurrent lesions, and outcomes are generally favorable due to the benign nature of both these entities. [ABSTRACT FROM AUTHOR]