Turkish Neurosurgery 2012 , Vol 22 , Num 1
Endoscopic Endonasal Transsphenoidal Exposure of Circle of Willis (Cw); Can It be Applied in Vascular Neurosurgery in the Near Future? A Cadaveric Study of 26 Cases
Forhad H CHOWDHURY1, Mohammod R HAQUE1, Khandkar A KAWSAR1, Shamim ARA2, Quazi Deen MOHAMMOD3, Mainul H SARKER1, Atul H GOEL4
1Dhaka Medical College Hospital, Department of Neurosurgery, Dhaka, Bangladesh
2Dhaka Medical College, Department of Anatomy, Dhaka, Bangladesh
3Dhaka Medical College, Department of Neurology, Dhaka, Bangladesh
4Seth GS Medical College and KEM Hospital, Department of Neurosurgery, Parel, Mumbai, India
DOI : 10.5137/1019-5149.JTN.4887-11.2 AIM: Endonasal transsphenoidal approaches are getting rapidly popular in removing many midline skullbase lesions from crista galli to foramen magnum. For safe removal of these lesions, familiarity with endoscopic endonasal anatomy of circle of Willis is very important. Furthermore, for safe development of this approach in vascular neurosurgery in the near future, endoscopic endonasal exposure of circle of Willis is a fundamental step. The goals in this study were to dissect the circle of Willis completely through the endoscopic endonasal approach and to become more familiar with the views and skills associated with the technique by using fresh cadaveric specimens.

MATERIAL and METHODS: After obtaining ethical clearance, 26 fresh cadaver heads were used without any preparation. Using a neuroendoscope, complete exposure of the circle of Willis was done endonasaly, and various observations including relation of circle of Willis was recorded.

RESULTS: Complete exposure of the circle of Willis was made through an endonasal approach in all cases without injuring surrounding structures.

CONCLUSION: Endoscopic endonasal extended transsphenoidal exposure of CW can make the surgeon more efficient in removing midline skullbase lesions with safe handling of different parts of circle of Willis and it may help in development of endonasal endoscopic vascular neurosurgery in the near future. Keywords : Endoscpic endonasal transsphenoidal, Circle of Willis, Exposure

Corresponding author : Forhad H Chowdhury, forhadchowdhury74@yahoo.com