title: Trunkal intracranial aneurysms: dissecting and fusiform aneurysms.
abstract: Aneurysms arising along the arterial trunk are uncommon and not well-characterized lesions in contrast to saccular aneurysms. According to pathological studies, most of spontaneous trunkal aneurysms are related to dissecting phenomena. On the basis of clinical presentation, dissecting aneurysms can be separated into acute or chronic lesions. Understanding of the underlying pathological mechanisms associated with these aneurysms is useful for planning appropriate treatment. This article reviews the etiopathogenesis, the angiographic aspects, and the endovascular treatment of dissecting aneurysms. Fusiform aneurysms and aneurysms in atherosclerotic disease also are discussed briefly.
authors.affiliation: Neurovascular Interventional Section, Department of Neuroradiology, Pitié-Salpêtrière Hospital, Paris VI University School of Medicine, 47-83 Boulevard de l'Hôpital, 75651 Paris, France. alessandra.biondi@psl.aphp.fr
authors.forename: Alessandra
authors.initials: A
authors.lastname: Biondi
mesh_terms: D000784:Aortic Dissection / Q000175:diagnosis / Q000209:etiology / Q000601:surgery; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis / Q000209:etiology / Q000601:surgery