Flow Preserving Endovascular Treatment of Traumatic Pseudoaneurysms of the Distal Anterior Cerebral Artery —Case Reports and Review of Literature

Abstract

Traumatic intracranial pseudoaneurysms (tIPAs) are a very rare pathology caused by blunt or penetrating head trauma. Diagnostic and therapeutic challenges of tIPAs are due to their unpre-dictable onset during the initial injury, or in a delayed manner, their unclear traumatic mechanism. Moreover, the presence of subarachnoid, subdural, or intraventricular hematoma may often cause them to be overlooked, which can potentially be followed by lethal rebleeding. Treatment of these lesions is controversial and on a case-by-case basis with regard to endovascular therapy or open surgery. We report two cases of three tIPAs of the distal anterior cerebral artery (dACA) with immedi-ate and delayed onset after the trauma. Endovascular therapy resulted in complete obliteration of lesions with flow preservation in the parent artery using the flow diverter-assisted coiling strategy. The aim of this manuscript is to discuss the mechanism, angioanatomical characteristics, and current treatment options for these exceptional lesions.