Faculty of Medicine
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Item type:Publication, PERSISTENT TRIGEMINAL ARTERY - ANATOMICAL FEATURES AND CLINICAL SIGNIFICANCE(Macedonian Association of Anatomists and Morphologists, 2023); ; ; ; Persistent trigeminal artery is the most common primitive carotid basilar anastomosis that persists in adulthood. The overall incidence of persistent trigeminal artery is between 0.2 to 0.76%. PTA are known to be associated with a wide range of pathology. The aim of this study was to describe the morphological characteristics of the PTA and to emphasize its clinical significance. We examined radiographs from patients who had CT angiography undertaken for a variety of clinical reasons, performed as a part of their medical treatment at the University Institute for Radiology in Skopje, RN Macedonia. The study population included 234 patients, 130 male and 104 females, mean age 57.8 years. In one patient we found PTA with overall incidence of 0.42%. CTA revealed a left PTA that arise from the internal carotid artery and communicate with the basilar artery between the origin of the anterior inferior cerebellar artery and the superior cerebellar artery. Although anatomically interesting, an awareness of the anatomy and variations of the brain arteries is clinically important for radiologists and surgeons for save performance of procedures, and forensic pathologists since variants may have forensic consequences. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Anomalous origin of the vertebral artery(Macedonian Association of Anatomists and Morphologists, 2010); ; ; The posterior circulation of the brain consists of the vertebrobasilar system and its branches. Vertebral arteries are responsible for about 30% of brain blood supply. The aim of this study was to examine the origin of the vertebral artery and to present the anatomic variations of the vertebral artery origin as well as the percentage of their appearance in the population. Material and methods: The origin of the vertebral artery was investigated in 30 patients; a total of 60 vertebral arteries were examined with CT angiography and DSA by Seldinger technique. Results: Abnormal origin of the vertebral artery was found in one (3.3%) patient. Vertebral artery originated directly from the aortic arch, as a second branch between left subclavian artery and left common carotid artery. Conclusion: Real abnormality of the origin of the vertebral artery is rare; in our series it was found in 3.3% of the cases. The described variations of the vertebral artery origin are not only interesting from the anatomical point of view, but they also find clinical applications in the surgery and diagnostic and therapeutic radiology.