Abstract
Background
Identification of the internal carotid artery (ICA) is essential for successful endoscopic endonasal cavernous sinus tumor surgery. This study aimed to develop a method for identifying the ICA in cavernous sinus tumors at the superior part of the cavernous sinus.
Methods
Ten fresh cadavers were studied with a 4-mm 0° and 30° endoscope to identify surgical landmarks of the ICA in the cavernous sinus. Clinical cases of cavernous sinus tumors were surgically treated using an endoscopic transpterygoid approach.
Results
Anatomical study indicated the ICA at the superior part of the cavernous sinus can be identified using three steps: 1) exposure of the optic nerve sheath by drilling the optic canal; 2) identification of the proximal orifice of the optic nerve sheath at the transition of the optic nerve sheath and dura mater of the tuberculum sellae; and 3) identification of the clinoid segment of the ICA at the distal dural ring just below the proximal orifice of the optic nerve sheath. Although the ICA was encased and transposed by tumors in preliminary surgical cases, the clinoid segment of the ICA was safely exposed at the superior part of the cavernous sinus using this method.
Conclusions
Dural structures around the cavernous sinus are key to identifying the ICA at the superior part of the cavernous sinus. This method is expected to reduce the risk of ICA injury during endoscopic endonasal surgery for cavernous sinus tumors.
References
Alfieri A, Jho HD (2001) Endoscopic endonasal cavernous sinus surgery: an anatomic study. Neurosurgery 48:827–836, discussion 836-837
Cavallo LM, Cappabianca P, Galzio R, Iaconetta G, de Divitiis E, Tschabitscher M (2005) Endoscopic transnasal approach to the cavernous sinus versus transcranial route: anatomic study. Neurosurgery 56:379–389, discussion 379-389
Ceylan S, Koc K, Anik I (2010) Endoscopic endonasal transsphenoidal approach for pituitary adenomas invading the cavernous sinus. J Neurosurg 112:99–107
Frank G, Pasquini E (2006) Endoscopic endonasal cavernous sinus surgery, with special reference to pituitary adenomas. Front Horm Res 34:64–82
Huynh-Le P, Natori Y, Sasaki T (2005) Surgical anatomy of the ophthalmic artery: its origin and proximal course. Neurosurgery 57:236–241, discussion 236-241
Jho HD, Ha HG (2004) Endoscopic endonasal skull base surgery: Part 2–The cavernous sinus. Minim Invasive Neurosurg 47:9–15
Kassam AB, Vescan AD, Carrau RL, Prevedello DM, Gardner P, Mintz AH, Snyderman CH, Rhoton AL (2008) Expanded endonasal approach: vidian canal as a landmark to the petrous internal carotid artery. J Neurosurg 108:177–183
Knosp E, Steiner E, Kitz K, Matula C (1993) Pituitary adenomas with invasion of the cavernous sinus space: a magnetic resonance imaging classification compared with surgical findings. Neurosurgery 33:610–617, discussion 617-618
Koitschev A, Simon C, Lowenheim H, Naegele T, Ernemann U (2006) Management and outcome after internal carotid artery laceration during surgery of the paranasal sinuses. Acta Otolaryngol 126:730–738
Valentine R, Wormald PJ (2011) Carotid artery injury after endonasal surgery. Otolaryngol Clin North Am 44:1059–1079
Vescan AD, Snyderman CH, Carrau RL, Mintz A, Gardner P, Branstetter BT, Kassam AB (2007) Vidian canal: analysis and relationship to the internal carotid artery. Laryngoscope 117:1338–1342
Zhao B, Wei YK, Li GL, Li YN, Yao Y, Kang J, Ma WB, Yang Y, Wang RZ (2010) Extended transsphenoidal approach for pituitary adenomas invading the anterior cranial base, cavernous sinus, and clivus: a single-center experience with 126 consecutive cases. J Neurosurg 112:108–117
Conflicts of interest
The authors report no conflicts of interest concerning the materials and methods used in this study and the findings specified in this paper.
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Komatsu, F., Shimoda, M., Oda, S. et al. Identification of the internal carotid artery at the superior part of the cavernous sinus during endoscopic endonasal cavernous sinus tumor surgery. Acta Neurochir 156, 475–479 (2014). https://doi.org/10.1007/s00701-013-1986-4
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DOI: https://doi.org/10.1007/s00701-013-1986-4