From the results of the present study, it is evident that there was a significant PICA emergence from the superior part of the vertebral artery and that the double origin of non-hypoplastic trunks was also found in some patients the latter is associated with a greater chance of aneurysms and other additional complications. The PICA originates near the inferior end of the olive - on the medulla oblongata. The PICA is one of the main arteries that supply the cerebellum. 21 One-fifth of these posterior fossa lesions originate from the posterior inferior cerebellar artery (PICA), thus accounting for 3 of all intracranial aneurysms. The posterior inferior cerebellar artery (PICA, Latin: arteria cerebelli inferior posterior) is the largest branch of the vertebral artery. The clinical implication of this knowledge and consensus is obtaining the best surgical strategies for clipping aneurysms and, in addition, the best choices for occlusion of the vessel affected if the territory of the main vessel has an adequate collateral circulation. Vertibrobasilar aneurysms constitute approximately 15 of all intracranial aneurysms, most of which arise from the basilar apex. CONCLUSION: The results obtained in the present study indicated the great importance of the studies and reviews on the different topographies of PICA these studies and reviews expand the knowledge and consensus on the characteristics and implications of PICA's variations. The clinical syndrome of PICA occlusion (Wallenberg and its various partial forms), a.k.a. The double origins of non-hypoplastic PICAs were found in 17% (n = 4) of patients. The posterior circulation supplies the cerebellum, brainstem, occipital lobes, and inferomedial temporal lobes, and comes from the vertebral arteries. PICA occlusion and the lateral medullary syndrome. Moreover, variations such as hypoplastic arteries, missing trunks on one side and double or triple trunks, different emergence sites, significant PICA emergence from the superior part of the vertebral artery (59% of the trunks), and asymmetries between the right and left sides were recorded. RESULTS: Some striking variations were found, such as the absence of the left vertebral artery in one of the brains and the emergence of any PICA in another two brains studied. MATERIAL and METHODS: The present study analyzed the different variations of the PICA's first two segments, the anterior medullary and lateral medullary segments, regarding the number of trunks, their emergency site, and the presence or absence of hypoplasia of this artery, through microsurgical dissection of 23 fresh cadaver brains. The posterior cerebral arteries are the terminal branches of the basilar artery and supply the occipital lobes and posteromedial temporal lobes. TURKISH NEUROSURGERY, v.32, n.2, p.244-250, 2022ĪIM: To study the operative approaches for posterior inferior cerebellar artery (PICA) aneurysms or understanding the different pathologies that can affect this artery, and to present detailed knowledge of this artery's anatomy. TATIT, Rafael Trindade PACHECO, Caroline AGUIAR, Pedro Henrique Simm Pires de ISOLAN, Gustavo Rassier CAMPERO, Alvaro BARBO, Maria Lourdes Peris AGUIAR, Paulo Henrique Pires de The Posterior Inferior Cerebellar Artery (PICA): An Anatomical and Clinical Analysis Please use this identifier to cite or link to this item:
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