Vertebrobasilar transient ischemic attacks – a challenging diagnosis

Abstract

Objectives. Transient ischemic attacks (TIAs) can present with a large variety of clinical features that impose an extensive differential diagnosis. We report this case due to its particularities of clinical presentation and diagnosis algorithm. Material and methods. A 72-year old male patient presented to our Neurology Department for recurrent episodes of numbness felt in the right upper limb. The initial patient history deemed the episodes as consistent with simple focal seizures. The cerebral computed tomography scan showed no recent lesions. Furthermore, video-electroencephalography was performed, but revealed no abnormalities. A second, more thorough anamnesis revealed that paresthesia was also present in the left part of the upper and lower lips and that the numbness episodes were being accompanied by blurred vision, loss of balance and difficulties coordinating his right upper limb. Results. The time-of-flight magnetic resonance angiography revealed dolichoectasia of the left vertebral and basilar arteries. Furthermore, the basilar artery grooved and displaced the pons with respect to the midline. The angio-computed tomography scan of the supra-aortic trunks showed multiple stenoses located in the V4 segment of both vertebral arteries, in the intracavernous segment of the right internal carotid artery and in the proximal segment (90%) and the middle third part (80%) of the basilar artery. The patient was diagnosed with vertebrobasilar TIAs and started treatment with Clopidogrel with no recurrence of the TIAs. Conclusions. This case was chosen to be presented in order to highlight another facet of the clinical polymorphism exhibited by transient ischemic attacks.

Keywords

• vertebrobasilar
• transient ischemic attack