ARTERIA ÁCIGOS CEREBRAL ANTERIOR. REPORTE DE 2 CASOS Y REVISIÓN DE LA LITERATURA. Azygos anterior cerebral artery. Report of two cases and review of the literature

Autores/as

  • Antonio Calvo Rubal Servicio de Neurocirugía, Asociación Española Primera de Socorros Mutuos, Montevideo
  • Fernando Martínez Servicio de Neurocirugía, Asociación Española Primera de Socorros Mutuos, Montevideo Departamento de Anatomía, Facultad de Medicina CLAEH, Maldonado Servicio de Neurocirugía, Hospital de Clínicas, Facultad de Medicina UdelaR, Montevideo
  • Osmar Telis Departamento de Radiología, Hospital de Clínicas, Facultad de Medicina UdelaR, Montevideo

DOI:

https://doi.org/10.31051/1852.8023.v5.n2.14061

Palabras clave:

Arterial circle of Willis, Vascular cerebral anatomy, Cerebral aneurysms, Circulo arterial cerebral, Anatomía vascular cerebral, Aneurismas cerebrales

Resumen

La arteria ácigos cerebral anterior (AACA) es un vaso formado por la fusión de ambas arterias pericallosas. Su presencia en series anatómicas es inferior al 5% de los casos. El objetivo de los autores es presentar dos casos de AACA asociados a un aneurisma intra-craneano y una malformación arteriovenosa (MAV). Casos clínicos: el caso 1 es una paciente de 52 años con un cuadro de hemorragia subaracnoidea. Una tomografía de cráneo (TC) confirmó el diagnóstico. Se hizo areriografía que evidenció un aneurisma de la AACA. El mismo fue clipado sin incidentes. El caso 2 se trata de un hombre que presentó un hematoma intraparenquimatoso y tenía antecedentes de haber sido operado por una malformación arteriovenosa (MAV). Una nueva arteriografía evidenció un remanente de MAV nutrido por ramos de una AACA. Se intervino sin complicaciones intraoperatorias, pero falleció en la evolución por una sepsis. La AACA es un vaso que se ve de forma transicional en embriones humanos y que se encuentra de forma reglada en mamiferos inferiors. Su presencia en cerebros adultos humanos e poco frecuente. Se destaca su asociación con aneurismas intracraneanos y alteraciones del desarrollo de la línea media cerebral. 

 

The azygos anterior cerebral artery (AACA) is a vessel formed by the fusion of both pericallosal arteries. Its presence in anatomical series is less than 5%. We present two cases of AACA, one associated with an aneurysm and other associated to an arteriovenous malformation (AVM). Clinical cases: Case 1 is a 52-year-old woman who was admitted to a hospital with sudden onset of sensory depression and headache. A cranial axial tomography (CT) demonstrated a sub-arachnoid hemorrhage. Cerebral angiography showed an aneurysm of an azygous anterior cerebral artery bifurcation. Surgical clipping was carried out with an excellent outcome. The second case is a 71-year-old man that had been operated 20 years before, of a right frontal AVM. He was admitted to a medical center with an acute severe left hemiparesis. The CT showed a right sided frontal haematoma and the cerebral angiography showed an AVM, partly fed by an AACA. The malformation was surgically treated, but the patient died at a later time as a consequence of sepsis. The AACA is seen as a transitional vessel in the human brain embryologic development, and is found in some inferior mammals and monkeys. This artery is seen in early stages related to the development of the corpus callosum. However, it disappears later on in most of the cases. Its existence in adults is infrequent, but has been reported in isolated cases sometimes associated with vascular malformations as those presented.

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2016-03-28

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ARTERIA ÁCIGOS CEREBRAL ANTERIOR. REPORTE DE 2 CASOS Y REVISIÓN DE LA LITERATURA. Azygos anterior cerebral artery. Report of two cases and review of the literature. (2016). Revista Argentina De Anatomía Clínica, 5(2), 73-79. https://doi.org/10.31051/1852.8023.v5.n2.14061