Title: Variation in the Origin of Superior Cerebellar Artery: A Case Report
Authors: Pratibha Shakya, Bismay Das, Neelesh Kumar Shakya, Chhandamayee Mohanty
DOI: http://dx.doi.org/10.18535/jmscr/v3i10.64
Introduction-The superior cerebellar artery is a branch of basilar artery and arises just before its bifurcation into posterior cerebral arteries. A bilateral origin of superior cerebellar artery from posterior cerebral artery is very rarely reported in literature. This variation is significant for surgeons who are dealing with pathology in this area. Case Report- Present study was conducted in Department of Anatomy, IMS, BHU, Varanasi. Microsurgical dissection was performed on the arteries of Circle of Willis. The origin of superior cerebellar artery was observed in 12 adult cadavers. In one case, bilateral origin of superior cerebellar artery was observed from posterior cerebral artery instead of basilar artery. The other brain vessels had no anomalies in the origin of their branches on either side. Conclusion- Knowledge of variation of Circle of Willis is very important because injury to occulomotor, trochlear, trigeminal nerves present in this area may cause neurological manifestations. This variation can be explained by the embryological development in this region. Key Words- Variation, Origin, Superior cerebellar artery. 1. Padget DH. The development of the cranial arteries in the human embryo. Contrib Embryol 1948; 32: 205–261. 2. Salamon G, Huang YP. Radiologic anatomy of the brain. Berlin Springer Verlag 1976; 305–306. 3. Hardy DG, Peace DA, Rhoton AL., Jr Microsurgical anatomy of the superior cerebellar artery. Neurosurgery 1980; 6: 10–28. 4. Uchino A, Sawada A, Takase Y, Kudo S. Variations of the superior cerebellar artery: MR angiographic demonstration. Radiat Med 2003; 21: 235–238. 5. Dagcinar A, Kaya AH, Aydın ME, Kopuz C, Senel A, Demir MT, Corumlu U, Celik F, Sam B. The superior cerebellar artery: anatomic study with review. Neurosurg Q 2007; 17: 235–240. 6. Mani RL, Newton TH, Glickman MG. The superior cerebellar artery: an anatomic-roentgenographic correlation. Radiology 1968; 91: 1102–1108. 7. Caruso G, Vincentelli F, Rabehanta P, Giudicelli G, Grisoli F. Anomalies of the P1 segment of the posterior cerebral artery: early bifurcation or duplication, fenestration, common trunk with the superior cerebellar artery. Acta Neurochir (Wien) 1991; 109: 66–71. Abstract
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