Case Report

Posterior circulation positional transient ischaemic attacks due to persistent primitive hypoglossal artery with redundancy

Michael Hoffmann, Peter Corr
South African Journal of Radiology | Vol 1, No 2 | a1614 | DOI: https://doi.org/10.4102/sajr.v1i2.1614 | © 2018 Michael Hoffmann, Peter Corr | This work is licensed under CC Attribution 4.0
Submitted: 15 August 2018 | Published: 31 May 1996

About the author(s)

Michael Hoffmann, Department of Vascular Surgery, Cerebrovascular Section, and Department of Medicine, Stroke Unit, Entabeni Hospital, South Africa
Peter Corr, Department of Radiology, University of Natal, South Africa

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Abstract

A persistent primitive hypoglossal artery was the sole identifiable stroke risk factor for a patient presenting with positional, posterior circulation ischaemic episodes. Diagnosis was made by magnetic resonance arteriography and verified by conventional angiography. Tortuosity and coiling of the hypoglossal artery was also present. Dynamic transcranial Doppler sonography was normal and SPECT brain scanning revealed an area of posterior hemisphere hypoperfusion. Redundancy of the primitive hypoglossal artery is the postulated mechanism of cerebral ischaemia.

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