Intracranial aneurysms: epidemiology and morphological analysis by digital angiography
DOI:
https://doi.org/10.11606/issn.1679-9836.v101i3e-180379Keywords:
Intracranial Aneurysm, Digital Angiography, AnatomyAbstract
Introduction: Intracranial aneurysms (IA) are vascular dilations that are highly prevalent and that can be identified by angiotomography, angioresonance and digital subtraction angiography (DSA), an exam considered the gold standard. For unruptured IA, there is still no absolute consensus on standardization of therapeutic conduct, which depends, intrinsically, on morphological and topographic aspects on angiographic examination. Objective: Analyze the epidemiological, morphological and topographic characteristics of unruptured IA identified by DSA and to correlate with risk factors. Method: 160 electronic medical records of patients with unruptured IA diagnosed by DSA between 2014 and 2018 were considered. Variables considered were epidemiological (gender, age and ethnic group), morphological aspects (shape, presence or absence of neck and size), topography, number of IA per patient and risk factors (systemic arterial hypertension, smoking and alcoholism), with statistical analysis by Spearman correlation. Results: Out of 160 patients, 207 unruptured IA were evaluated. There was a predominance of females, aged 60 to 69 years and white ethnicity. Regarding risk factors, 58.75% had systemic arterial hypertension. Most patients have a single aneurysm, and the most prevalent location was the right internal carotid artery. Saccular, small (less than 7 mm) and large-necked aneurysms predominated. There was a statistical correlation between size and location (p <0.001), size and type of neck (p = 0.0005) and between shape and type of neck (p <0.001). Conclusion: Prevalence of unruptured IA in middle-aged, white and hypertensive women, with a predominance of a single small non-lobulated saccular aneurysm with a large neck in the right internal carotid artery. Correlation of saccular IA with large neck, giant IA in internal carotid artery, and small IA with large neck.
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