The trigeminal artery is one of the arterial structures that constitute anastomosis between the carotid and the posterior circulation during fetal life and usually regress. However these arterial structures may persist in adult life and the trigeminal artery is the one that most frequently show such behaviour. We describe the case of two monochorial female twins with a persistent primitive trigeminal artery revealed by magnetic resonance angiography.
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BoukobzaMHoudartEChapotR: Persistent trigeminal artery and its variant. Contribution of MRI and MR-angiography. J Radiol78: 1147–1151, 1997.
