Bohutová J, Marková J, Neuwirth J
Radiodiagnostische Klinik ILF, Praha, CSFR.
Rofo. 1990 Oct;153(4):427-31.
Anomalies of vertebrobasilar vessels arise as early embryonal developmental deteriorations. The majority of them concerns the position, origin and shape of the vertebral and/or basilar arteries. In three patients, reported here, the aberrations were found occasionally and contributed in no way to the clinical symptomatology. In the first patient, a fenestration of A. basilaris was found with a fork-like division on its periphery. In the second patient we noted a doubled proximal origin of the vertebral artery. One artery arose from A. subclavia sinistra, the second one from the aortic arch. Both joined thereafter the common vertebral stem at the level of C4. In the third patient, A. vertebralis originated from the aortal arch, and, at the level of the thyroid, A. thyreoidea inferior originated from it. Attention is drawn to the practical importance of such variations as a possible source of diagnostic errors during cerebral arteriography.
椎基底动脉异常是胚胎早期发育恶化所致。其中大多数涉及椎动脉和/或基底动脉的位置、起源和形态。本文报告的3例患者中，这些异常是偶然发现的，对临床症状并无影响。第一例患者，发现基底动脉有开窗，其周边呈叉状分支。第二例患者，我们注意到椎动脉近端起源重复。一条动脉发自左锁骨下动脉，另一条发自主动脉弓。此后二者在C4水平汇入共同的椎动脉干。第三例患者，椎动脉发自主动脉弓，在甲状腺水平，甲状腺下动脉也发自该动脉。需注意此类变异在脑血管造影时可能作为诊断错误来源的实际重要性。
