Abstract
A 58-year-old-male presented with episodes of numbness left sided face, arm & leg for few seconds from last 2-3 months & few episodes of transient ischaemic attacks (TIA’s) in past. Physical examination showed high blood pressure (174/74). Case was misdiagnosed as occlusion or stenosis of internal carotid artry on magnetic resonance angiography utilizing the time-of-flight technique, but suspicion of ICA agenesis was raised by the absence of the typical flow void in the ICA region, on the spin-echo sequences (T2W). This finding was confirmed by magnetic resonance angiography of the cervical vessels, and axial computed tomography. CT scan showed agenesis of the left carotid canal. On magnetic resonance angiography of the cervical vessels, there was associated findings like hypoplastic right vertebral artery with accessory vertebral/collateral & complete occlusion or agenesis of right external carotid artery at its origin & atherosclerotic changes in right internal carotid artery.
Keywords: Internal carotid artery; Agenesis; Transient ischaemic attack; Misdiagnosed; Occlusion or stenosis.
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Corresponding Author
Dr Rajendra Kumar Choudhary
Assistant Professor Dept of Radiodiagnosis
Dr S N Medical College Jodhpur Rajasthan
DOI: https://dx.doi.org/10.18535/jmscr/v6i1.66
