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KMID : 0378019700130110109
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New Medical Journal
1970 Volume.13 No. 11 p.109 ~ p.112
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The Persistent Primitive Trigeminal Artery
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Abstract
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The primitive trigeminal artery coming off from the internal carotid artery in the 4 mm embryo feeds both longitudinal neural arteries and forms the basilar artery in a later stage. In the 14 mm embryo, the anastomosis is usually occluded.
The persistence of this artery into adult life was first described by Quain in 1844, and was first demonstrated angiographically in 1950 by Sutton. This anomaly is found to occur in 0.5-2 per cent of anatomical studies and 0.1-0.5 per cent of carotid angiograms.
In this report two cases of angiographically confirmed persistent primitive trigeminal artery are described. One was found incidentally during direct percutaneous common carotid injection on the right side in a 56 years old Korean female who had a head injury. The another one was found in a ninteen years old Korean man who had complained of headache and frequent attacks of loss of consciousness or cerebellar fit without loss of consciousness. During right sided common carotid artery injection an attack of decerebrate rigidity was developed without loss of consciousness. However his electroencephalogram was normal in waking and sleeping state. Some hemodynamic changes in his cerebral circulation seemed to be related to his unusual fits and frequent loss of consciousness.
In addition, we have reviewed about this primitive trigeminal artery in literatures.
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