Elsevier

Surgical Neurology

Volume 53, Issue 4, April 2000, Pages 334-336
Surgical Neurology

Vascular aneurysm
Dissecting aneurysm of the anterior choroidal artery: angiographical and MR imaging findings

https://doi.org/10.1016/S0090-3019(00)00198-1Get rights and content

Abstract

BACKGROUND

Intracranial dissecting aneurysms are relatively rare. We present a rare case of a dissecting aneurysm originating from the anterior choroidal artery; this is the first reported case.

CASE DESCRIPTION

A 42-year-old man suffered sudden onset of right hemiparesis and dysarthria. Computed tomography on admission revealed a small low density area in the posterior limb of the internal capsule. MR imaging revealed aneurysmal dilatation of the anterior choroidal artery, and angiography revealed aneurysmal dilatation and stasis of dye in the venous phase at the anterior choroidal artery, which resolved in the chronic stage.

CONCLUSION

We describe a rare case of a dissecting aneurysm of the anterior choroidal artery. The radiological findings were characteristic of dissecting aneurysms in spite of the rare location.

Section snippets

Case report

A 42-year-old man suffered sudden onset of right hemiparesis and dysarthria when driving a car. He was admitted to our institute on the second hospital day. Neurological findings on admission were right hemiparesis, dysarthria, and right facial nerve palsy. No sensory disturbances or hemianopsia were observed. He did not have a history of myocardial disease or systemic inflammatory disease.

Computed tomography (CT) on admission revealed a small low density area in the posterior limb of the

Discussion

Dissecting aneurysm of the anterior choroidal artery has not been reported so far. This is the first reported case.

MR imaging is generally believed to provide the final diagnosis of dissecting aneurysm. MR imaging detects intramural hemorrhage as a thickened vessel wall with a narrowed lumen, surrounded by a semilunar-shaped eccentric hyperintense signal from the mural hematoma [2]. These findings were not present in our case. SPGR images could not show the false lumen, but did demonstrate the

References (8)

  • A.H. Friedman

    Arterial dissections

  • Guillon B, Levy C, Bousser MG. Internal carotid artery dissection: An update. J Neurol Sci 1998;153:146–58....
  • J.J. Jafar et al.

    A dissecting aneurysm of the posteroinferior cerebellar arteryCase report

    Neurosurgery

    (1998)
  • A. Maillo et al.

    Dissecting aneurysm of the posterior cerebral arterySpontaneous resolution

    Neurosurgery

    (1991)
There are more references available in the full text version of this article.

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