Developmental Venous Anomaly Serving as a Draining Vein of Brain Arteriovenous Malformation

Abstract

SUMMARY -Developmental venous anomalies are cerebral vascular malformations that present normal venous drainage of cerebral tissue. With increased and accessible usage of modern diagnostic tools, they are now one of the most commonly diagnosed cerebral vascular malformations. Although developmental venous anomalies are considered to be benign lesions, association with arteriovenous malformation renders malignant potential to this combined pathology. In the case presented, these malformations were clinically silent and diagnosed accidentally, so they were not treated either with surgery, endovascular surgery or radiosurgery, considering the possible complications such as venous infarction of the brain, and because there was no obvious neurologic defi cit related to this pathology. Th e patient presents for regular neurosurgical follow up examinations and has been free from symptoms that were present on admission.

Giant Cavernous Malformation with Unusually Aggressive Clinical Course: a Case Report

“…Emergency surgery is usually not indicated in order to avoid the possible intraoperative complications. This is achieved through detailed preoperative evaluation, which allows for the use of the dissection plane to avoid rebleeding, the finding of large feeders to prevent intraoperative hemorrhage, and preservation of the associated venous anomaly to prevent venous infarction 21,22 .…”

Malformación venosa supratentorial. Reporte de caso

“…Una vez descartadas y tratadas otras patologías asociadas la cirugía se reserva ante la presencia de un hematoma que necesite evacuación de emergencia (sin tratar la malformación), en los casos de hidrocefalia obstructiva por compresión del acueducto o de la fosa posterior, en la compresión neurovascular provocada por los vasos de la MV generando neuralgia trigeminal o espasmo hemifacial donde la descompresión microvascular puede aliviar los síntomas y en la epilepsia farmacoresistente no atribuibles a otra causa. Igualmente, la Embolización y la Radiocirugía pueden causar graves alteraciones del drenaje venoso, esta última con una alta incidencia de radionecrosis después del proceder 5,6,7,14,16,17,18,19,20,21,22 .…”