Radiological findings of brain stem infarction due to unilateral vertebral artery dissection in a patient with vertebrobasilar hypoplasia

Abstract

Congenital hypoplasia of the vertebrobasilar system is a very rare condition but it is an important clinical condition which may cause ischemia or infarction of the posterior system especially in young adult patients. Brain computed tomography (CT), magnetic resonance imaging (MRI), and diffusion imaging are used to diagnose of this disease which is usually detected when it is symptomatic. We present this case with the thought that knowing the radiological findings of this rare disease with clinically important results will contribute to the diagnosis.

Keywords

• Vertebrobasilar hypoplasia,vertebral artery dissection,posterior system ischemia

Vertebrobaziler hipoplazi bulunan olguda unilateral vertebral arter diseksiyonuna bağlı beyin sapı enfarktının radyolojik bulguları

Abstract

Vertebrobaziler sistemin konjenital hipoplazisi oldukça nadir görülen fakat özellikle genç erişkin hasta grubunda posterior sistem iskemi ya da enfarktına neden olabilecek önemli bir klinik durumdur. Genellikle semptomatik olduğunda tespit edilen bu hastalığın tanısında beyin bilgisayarlı tomografi (BT), manyetik rezonans görüntüleme (MRG) ve diffüzyon görüntüleme yöntemlerinden faydalanılır. Biz bu olguyu nadir görülen ve klinik olarak önemli sonuçları olan bu hastalığın radyolojik bulgularının bilinmesinin tanıya katkı sağlayacağı düşüncesiyle sunmaktayız.

Keywords

• Vertebrobaziler hipoplazi,vertebral arter diseksiyonu,posterior sistem iskemi

References

1. 1. Chuang YM, Huang YC, Hu HH, Yang CY. Toward a further elucidation: role of vertebral artery hypoplasia in acute ischemic stroke. Eur Neurol. 2006;55:193–7.
2. 2. Seemant C, Timonthy L, Chen W. Ischemia in the territory of a hypoplastic vertebrobasilar system. Neurology. 1999;52:980–3.
3. 3. Turgut N, Pekindil G, Utku U, Celik Y, Siengün S. Isolated hypoplasia of distal basilar artery: clinical and imaging findings. Yeni Symposium. 2004;42:121–5.
4. 4. Chen JJ, Chen D. A case report of intracranial vertebral-basilar artery hypoplasia presenting with episodic dizziness. Ghana medical journal. 2010;44
5. 5. Park JH, Kim JM, Roh JK. Hypoplastic vertebral artery: frequency and associations with ischaemic stroke territory. J Neurol Neurosurg Psychiatry. 2007;78:954–8.
6. 6. Thierfelder KM, Baumann AB, Sommer WH, et al. Vertebral artery hypoplasia: frequency and effect on cerebellar blood flow characteristics. Stroke. 2014;45:1363-8.
7. 7. Hu XY, Li ZX, Liu HQ, et al. Relationship between vertebral artery hypoplasia and posterior circulation stroke in Chinese patients. Neuroradiology. 2013;55:291–5.
8. 8. Schievink WI. Spontaneous dissection of the carotid and vertebral arteries. N Engl J Med. 2001;344:898–906.