Three-Dimensional Computed Tomography Angiography Assisted Resection of Ventral Foramen Magnum and Jugular Foramen Tumours via Modified Far Lateral Suboccipital Approach

Abstract

Objective: The anatomical relationship of ventral foramen magnum and jugular foramen tumour is complex and the operation is very difficult. The aim of this study was to summarize the microsurgical experience of the removal of the ventral foramen magnum and jugular foramen tumours via the modified far lateral suboccipital approach assisted by three-dimensional computed tomography angiography (3D-CTA). Methods: The clinical data and follow-up results of 13 cases of 3D-CTA assisted suboccipital far lateral approach from July 2011 to September 2017 were analyzed retrospectively. There were 5 males and 8 females. Preoperative CT and MRI were used for routine imaging diagnosis, and the 3D-CTA simulated surgical approach was performed. The preoperative operation scheme was established, and the risk of operation was evaluated according simulated operation. After individualized exposure, the modified far lateral suboccipital approach was completed under the neuroelectrophysiological monitoring technique. Results: The preoperative images were completely consistent with the findings in the surgery. There were 9 cases of jugular foramen tumour and 4 cases of ventral foramen magnum tumour. Of the 13 cases, only 1 case of jugular glomus tumour had extra-cranial residual, while the whole intracranial tumour was removed. In other 12 cases, the tumours were completely removed under the microscope. After operation, the headache disappeared, and hearing loss was improved. There was no perioperative deaths, infection and cerebrospinal fluid leakage. The facial paralysis was occurred in 1 patient. After 3–39 months of follow-up, there was no recurrence of tumour, or new nerve function defect. Hoarseness, choking of drinking water and numbness of limbs were all improved at the end of the follow-up period. The symptoms of postoperative facial paralysis were also improved during the follow-up period. Conclusion: After the preoperative simulation and evaluation by 3D-CTA, the ventral foramen magnum and jugular foramen tumours can be rescted safely and effectively via far modified lateral suboccipital approach.