M Hitier1, R Hibon, G Candelier, J Guarnieri, S Moreau, E Babin. 1. CHU Côte de Nacre, University Hospital, Department of Otolaryngology-Head and Neck Surgery, Avenue de la Côte de Nacre, 14033 Caen cedex, France. mart1_hit@yahoo.fr
Abstract
OBJECTIVES: To examine the use of computer-assisted surgery in transnasal pituitary gland surgery. PATIENTS AND METHODS: Twenty cases of transnasal pituitary gland surgery using a computer-assisted navigation system, carried out between 2002 and 2004, were retrospectively studied. The subjects consisted of 7 men and 13 women aged between 27 and 77 years of ages. The pituitary tumours included 18 macroadenomas, a microadenoma and a craniopharyngioma. Ten of the cases presented with visual field and/or visual acuity disturbances. Seven of the cases presented with endocrine disorders. A computed tomography scanner destined for navigation purposes was carried out 24 hours before the operation. The computer-assisted system used was the Digipointeur (Collin ORL) based on a system of spatial localization in electromagnetic fields. RESULTS: Tumour removal was complete in 50% of cases and partial, as judged by MRI 3 months after the procedure, in 45% of the cases. In 40% of cases, the preoperative visual disturbances had completely disappeared at 3 months. A considerable clinical improvement was observed in all of the other cases. Peroperative complications were limited to two breaches of the meninges and one peroperative hemorrhage during the excision of a macroadenoma invading the cavernous sinus, necessitating the suspension of the operation. CONCLUSION: In our experience, the use of a computer-assisted system in transseptal pituitary surgery gives reliable millimetric surgical precision in the localization of vital internal anatomical structures, optimizes surgical resection and increases levels of safety.
OBJECTIVES: To examine the use of computer-assisted surgery in transnasal pituitary gland surgery. PATIENTS AND METHODS: Twenty cases of transnasal pituitary gland surgery using a computer-assisted navigation system, carried out between 2002 and 2004, were retrospectively studied. The subjects consisted of 7 men and 13 women aged between 27 and 77 years of ages. The pituitary tumours included 18 macroadenomas, a microadenoma and a craniopharyngioma. Ten of the cases presented with visual field and/or visual acuity disturbances. Seven of the cases presented with endocrine disorders. A computed tomography scanner destined for navigation purposes was carried out 24 hours before the operation. The computer-assisted system used was the Digipointeur (Collin ORL) based on a system of spatial localization in electromagnetic fields. RESULTS:Tumour removal was complete in 50% of cases and partial, as judged by MRI 3 months after the procedure, in 45% of the cases. In 40% of cases, the preoperative visual disturbances had completely disappeared at 3 months. A considerable clinical improvement was observed in all of the other cases. Peroperative complications were limited to two breaches of the meninges and one peroperative hemorrhage during the excision of a macroadenoma invading the cavernous sinus, necessitating the suspension of the operation. CONCLUSION: In our experience, the use of a computer-assisted system in transseptal pituitary surgery gives reliable millimetric surgical precision in the localization of vital internal anatomical structures, optimizes surgical resection and increases levels of safety.