title: Thrombosis of the Azygos Anterior Cerebral Artery.
abstract: The azygos anterior cerebral artery is a rare variant, characterized by the absence of the anterior communicating artery and the union of two proximal segments of the anterior cerebral artery, forming a single trunk and ascending through the interhemispheric fissure. The incidence in the population varies from 0.3 to 2%. The presence of occlusion for this vessel causes bifrontal infarcts, with potentially devastating functional consequences, hence the importance of recognizing this anatomical variation in imaging exams.
authors.affiliation: Division of Radiology, Medimagem, Teresina, PI, Brazil.
authors.forename: Camila Soares Moreira
authors.identifier: 0000-0003-4952-2320
authors.initials: CS
authors.lastname: de Sousa
authors.affiliation: Division of Radiology, Medimagem, Teresina, PI, Brazil.
authors.forename: Carla Lorena Vasques Mendes
authors.identifier: 0000-0001-7586-440X
authors.initials: CL
authors.lastname: de Miranda
authors.affiliation: Division of Radiology, Medimagem, Teresina, PI, Brazil; Division of Radiology, Emergency Hospital in Teresina Dr. Zenon Rocha, Teresina, PI, Brazil.
authors.forename: Marcelo Coelho
authors.initials: MC
authors.lastname: Avelino
authors.affiliation: Division of Radiology, UDI 24 Hours, Teresina, PI, Brazil.
authors.forename: Breno Braga
authors.initials: BB
authors.lastname: Bastos
authors.affiliation: Division of Radiology, Antonio Prudente Hospital, Fortaleza, CE, Brazil.
authors.forename: Rafael Soares
authors.initials: RS
authors.lastname: Moreira de Sousa
authors.affiliation: Division of Radiology, UDI Hospital, São Luís, MA, Brazil.
authors.forename: Carla Valéria Vasques Mendes
authors.identifier: 0000-0002-0011-3879
authors.initials: CV
authors.lastname: de Miranda