Giant fusiform aneurysm of the basilar artery

Evolution of Flow-Diverter Endothelialization and Thrombus Organization in Giant Fusiform Aneurysms after Flow Diversion: A Histopathologic Study

“…13 Others may grow very large or giant and become symptomatic via neural compression or ischemia. The clinical course is generally progressive and, without successful treatment, almost always devastating.…”

Intracranial Fusiform Aneurysms: It's Pathogenesis, Clinical Characteristics and Managements

“…Conceptually, there is still confusion as to the etiological, clinical and radiological features of fusiform aneurysms. Several investigators have applied the term "atherosclerotic" as the cause of fusiform aneurysms [7][8][9]23,25) .…”

“…Fusiform aneurysms are nonsaccular dilatations involving the entire vessel wall for a short distance 2,4,9,25) . They are termed cylindrical if it involves a somewhat longer length 34) .…”

“…Fusiform aneurysms in this study were found in the anterior circulation in 17 (77%) of the patients and in the posterior circulation in 23%. Dissection has been proposed as the main underlying cause of fusiform aneurysms and most commonly involves the posterior circulation, especially vertebral and basilar arteries 1,3,[5][6][7][8][9][10]15,16,19,20,[24][25][26]32,35) However, typical cases of dissecting aneurysm in the posterior circulation were excluded in this study. Dissecting aneurysms can originate in any regions of the anterior circulation, such as the ICA 1,29) , MCA 2,4,6,10,[13][14][15][16]22,26,30) , the ACA 3,10,[16][17][18]24,27,30,32,35) and rarely in the anterior choroidal artery 21) .…”

A giant fusiform basilar aneurysm treated by bilateral vertebral artery occlusion

“…7 A similar disruption of the internal elastic lamina occurs in atherosclerosis. 8 Acute and chronic inflammatory changes and atheromatous degeneration in the walls of some aneurysms have been documented. 9 Despite this, many dispute a connection between atherosclerosis and aneurysm formation in all cases.…”