Intra-operative localisation of skull base tumours. A case report using the ISG viewing wand in the management of trigeminal neuroma

Deep-seated skull base tumours provide as much a challenge to the surgeons' skills of localisation as to his technical abilities during the resection. These lesions are frequently inaccessible and lie adjacent to vital struct ures requiring extensive cerebral retraction for adequate exposure and dire ct visualisation. The ISG viewing wand is a newly developed image guidance system to aid direction of the operative approach and localisation of intra cerebral pathology. We discuss its use in the management of a trigeminal ne uroma.