PICA termination of hypoplastic verterbal artery

Case contributed by Dr Gaurav Som Prakash Gupta

Presentation

Stroke.

Patient Data

Age: 40
Gender: Male
MRI

MRA OF BRAIN AND NECK

The presented images are from a TOF MRA of brain and neck. There is no definite stenotic segment. However, the images show:

Case Discussion

The MR study of this patient showed an approximately 12 x 9 mm subacute infarction in the left caudate nucleus (not shown in these images).

The presented images are from TOF MRA of brain and neck. There is no definite stenotic segment. 

However, the images show a markedly hypolastic right vertebral artery which is terminating in to the PICA (posterior inferior cerebellar artery). This likely to be hypoplasia rather than stenosis, as the narrowing is involving the entire course of the vertebral artery and there is no segment of abrupt change in calibre. Also there is no wall irregularity. The ostea of the vertebral artery, which is commonest site of vertebral stenosis stenosis, also appears normal.

The case highlights a variation of the vertebral artery circulation: a thin vertebral artery ending into PICA.

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Case information

rID: 24368
Case created: 10th Aug 2013
Last edited: 18th Dec 2015
Inclusion in quiz mode: Included

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