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  • Title: Angiographic Features of Intracranial Aneurysms in Ecuador.
    Author: Samaniego EA, Roa JA, Martinez-Burbano B, Ortega-Gutierrez S, Hasan DM, Jibaja M, Torner JC, Maldonado N.
    Journal: J Stroke Cerebrovasc Dis; 2019 Mar; 28(3):761-767. PubMed ID: 30522803.
    Abstract:
    BACKGROUND: Most of the literature describing morphological features of intracranial aneurysms (IAs) is from North-America, East-Asia, and Europe. There is limited data from South-America. We describe the epidemiologic and angiographic features of ruptured and unruptured IAs in a cohort of patients from Ecuador. METHODS: We conducted a retrospective analysis of prospectively acquired databases from 3 different tertiary hospitals over a 3-year period (2014-2017). In a per-patient basis, odd ratios (ORs) of ruptured presentation for each variable using a univariate logistic regression model were calculated. An aneurysm-based multivariate analysis was performed to calculate rupture ORs for each variable. RESULTS: Our sample included 557 patients with 761 IAs. Mean patient age was 52.2 years (range 18-82). Sixty-eight percent were women, and almost 90% presented with ruptured aneurysms and concomitant subarachnoid hemorrhage (SAH). Mean size of all the IAs was 6.4 mm ± 3.98 mm. Most IAs were located in anterior circulation (96.6%): 28.4% medial cerebral artery, 24.4% anterior cerebral artery or anterior communicating artery (ACOM), and 23.5% posterior communicating artery (PCOM). Only 6 basilar tip aneurysms (0.8%) were reported. In the adjusted analysis, aneurysms located in the ACOM (OR 1.89, 95% CI 1.29-2.78) and PCOM (OR 1.84, 95% CI 1.25-2.71), size larger than 5 mm (OR 2.84, 95% CI 2.04-3.93) and 7 mm (OR 2.28, 95% CI 1.64-3.19), and those with non-saccular morphology (OR 9.87, 95% CI 2.21-44.14) were significantly associated with ruptured presentation. CONCLUSIONS: The prevalence of posterior circulation IAs in Ecuador, particularly basilar tip aneurysms, is low when compared to previous reports from developed countries. In our sample, IAs greater than 5 mm (and ≥7 mm) in size, ACOM and PCOM locations, and IAs with nonsaccular morphologies (blister and fusiform) were significantly associated with SAH presentation.
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