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[Dolichoectatic intracranial arteries. Association with aneurysms of the abdominal aorta]
J C Gautier1, J J Hauw, A Awada
1Service d'Urgences Cérébrovasculaires, Hôpital de la Salpêtrière, Paris.
Insights
Dolichoectatic intracranial arteries (DIA) are a common condition presenting with neurological symptoms due to arterial compression or ischemic events. Associated arterial abnormalities, like aortic aneurysms, are frequently observed in patients with DIA.
Area of Science:
- Neurology
- Vascular Medicine
- Radiology
Background:
- Dolichoectatic intracranial arteries (DIA), also known as fusiform aneurysms or dolichomega-arteries, represent a significant vascular condition.
- DIA can manifest with diverse neurological symptoms, including cranial nerve palsies and hydrocephalus, often resulting from arterial compression or ischemic/hemorrhagic events.
Abstract:
Dolichoectatic intracranial arteries (DIA) have been given several names, e.g. fusiform aneurysms, dolichomega-arteries. It is not an uncommon condition and it raises interesting points: 1) symptoms and signs result from compression (cranial nerve palsies; hydrocephalus) from ischemic or hemorrhagic episodes; 2) the diagnosis is made easier with CT since the arterial wall is often calcified; 3) the pathophysiology has long been assumed to be atherosclerotic in nature, but controversial assumptions are discussed; 4) associated arterial abnormalities are common: one of our cases and approximately half of the post mortem reported DIA were associated with aneurysm of the abdominal aorta. Two cases are reported here: 1) A 56 y/o male presented with progressive gait disorder, deafness and ischemic episodes. CT showed DIA and hydrocephalus. DIA involved the basilar artery, both intracranial carotid arteries, the abdominal aorta and probably one renal artery. A ventriculo-atrial shunt was performed unsuccessfully. Post mortem findings are reported; 2) A 52 y/o male had suffered from trigeminal neuralgia for about one year and from trigeminal permanent pain for two weeks. He had developed left hemiparesis and dysarthria. DIA involved the basilar artery and the left intracranial internal carotid artery. The right internal carotid artery and the right vertebral artery were hypoplastic. Clinical, radiographical and pathophysiological features are reviewed.