Three-Dimensional Computed Tomography Angiography for the Investigation of Superficial Temporal Artery Pseudoaneurysms-Two Case Reports-

Abstract

An 89-year-old man and a 60-year-old man presented with superficial temporal artery (STA) pseudoaneurysms which developed secondary to trauma. Conventional cerebral angiography and three-dimensional computed tomography (3D CT) angiography clearly demonstrated the STA pseudoaneurysms. The patients underwent surgical excision of the aneurysms based on the conventional cerebral angiography findings in one patient and 3D CT angiography findings in other patient. 3D CT angiography is an excellent noninvasive diagnostic method for detecting extracranial aneurysms such as STA pseudoaneurysm, especially the relationship between the aneurysm and surrounding structures, including the calvarium.

Spontaneous Giant Aneurysm of the Superficial Temporal Artery -Case Report-

“…Recent developments of multi-detector CT can non-invasively visualize intraand extracranial vascular lesions with high spatial resolution. 6) Especially in the present case, 3D CT angiography provided important information on the anatomical relationship between the aneurysm and the surrounding tissue, including the external auditory meatus and zygomatic arch. Furthermore, 3D CT angiography could clearly visualize the topographical relationship between the aneurysm and the proximal STA.…”

Giant traumatic pseudoaneurysm of the superficial temporal artery: Treatment challenges and case review

“…12,13 It is very unusual to require such an extensive, staged procedure as in this case. The reason this was required was that the pseudoaneurysm had reached such enormous dimensions that any other therapeutic interventions were inadequate.…”

Spontaneous Superficial Temporal Artery Pseudoaneurysm in Elderly Women -Three Case Reports-

“…3,7,10,12,13) Histological examination of most STA aneurysms reveals disruption of the internal elastic lamina and the presence of fibrous connective tissue and hematoma, indicative of pseudoaneurysm. 2,5,8,15) Spontaneous STA aneurysms, in contrast, tend to be associated with arteriosclerosis, are characterized by atherosclerotic plaques and calcification, and most are identified as true aneurysms by histological examination. 1,6,11,14) Although we first thought that the STA aneurysms in our elderly patients were attributable to arteriosclerosis, we identified them as pseudoaneurysms based on the histological examination of the aneurysm wall revealing disruption of the internal elastic lamina and presence of the connective tissue and adventitia only.…”