Vascular loop in the cerebellopontine angle: Clinical-radiological correlation.

Autor: Mejía-Quiñones V; Centro de Investigaciones Clínicas (CIC), Fundación Valle del Lili, Cali, Colombia. Electronic address: valentina.mejia@fvl.org.co., Valderrama-Chaparro JA; Centro de Investigaciones Clínicas (CIC), Fundación Valle del Lili, Cali, Colombia., Paredes-Padilla S; Universidad Icesi, Cali, Colombia., Orejuela-Zapata JF; Departamento de Radiología, Hospital Universitario Fundación Valle del Lili, Cali, Colombia., Granados-Sánchez AM; Departamento de Radiología, Hospital Universitario Fundación Valle del Lili, Cali, Colombia.
Jazyk: angličtina
Zdroj: Radiologia [Radiologia (Engl Ed)] 2022 Sep-Oct; Vol. 64 (5), pp. 407-414. Date of Electronic Publication: 2022 Jun 02.
DOI: 10.1016/j.rxeng.2020.06.004
Abstrakt: Background: The brainstem, situated in the posterior fossa, connects the brain to the spinal cord. Owing to its location, the nerves of the brainstem are closely related with vascular structures.
Objectives: To correlate the finding of vascular loops in the cerebellopontine angle on imaging with symptoms indicative of vestibulocochlear involvement.
Materials and Methods: This retrospective descriptive study included all patients evaluated between 2011 and 2017 with findings suggestive of vascular loops in the cerebellopontine angle for whom the clinical history and imaging studies were available.
Results: A total of 102 patients (63 women and 39 men) had vestibulocochlear involvement. The most common clinical indication was dizziness (41.18%). A unilateral vascular loop was found in 43 patients (right: 21.57%, left: 20.59%) and bilateral loops were found in 59 (57.84%) patients. The most common type of vascular loop was type II (right: 69.14%; left: 58.75%). The most common origin of vascular loops was the anterior inferior cerebellar artery (right: 66.67%, left: 65.00%). No associations were observed between vascular loops and sensorineural hearing, nystagmus, or vertigo. There was an association with tinnitus.
Conclusions and Significance: The presence of vascular loops is not associated with most auditory symptoms. Nevertheless, all findings on imaging studies must be reported. The interpretation of the findings of imaging studies must be correlated with the clinical symptoms after other more common causes that can explain the symptoms have been ruled out.
(Copyright © 2020 SERAM. Published by Elsevier España, S.L.U. All rights reserved.)
Databáze: MEDLINE
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