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Neurosurgery. 2000 Aug;47(2):463-5.

Fenestration of the posteroinferior cerebellar artery: case report.

Author information

1
Department of Neurological Surgery, School of Medicine, University of California San Francisco, USA.

Abstract

OBJECTIVE AND IMPORTANCE:

Fenestrations of cerebral arteries are rare, but very important to diagnose given their high association with saccular aneurysms. We present the first reported case of a fenestration of the posteroinferior cerebellar artery (PICA).

CLINICAL PRESENTATION:

A 62-year-old man who presented with a subarachnoid hemorrhage underwent repeated four-vessel cerebral angiography. An isolated right PICA abnormality consistent with a dissection or fenestration was revealed.

INTERVENTION:

The patient underwent surgical exploration of his PICA, which confirmed a PICA fenestration without an associated saccular aneurysm. The fenestration was wrapped with cotton.

CONCLUSION:

Our case report illustrates the novel anatomic finding of a fenestration of the PICA. Knowledge of this entity would be helpful in the differential diagnosis of a posterior fossa subarachnoid hemorrhage.

PMID:
10942023
[Indexed for MEDLINE]

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