INDIVIDUAL PLANNING OF OPERATIVE APPROACHES IN SURGERY OF TUMORS OF POSTERIOR CRANIAL FOSSA

Abstract

Objective: to optimize the surgical approaches to the tumors of posterior cranial fossa (PCF). Material and methods. The analysis of 93 CT scans and 48 MRI scans as well as 72 CT- and MR-angiograms with sinuses visualizations of patients with PCF tumors using system of bone landmarks and projection lines was conducted. Results. The variants of PCF configuration as well as features of dislocation of cerebral and neurovascular structures according to localization of tumors and type of bone-meningeal frame were determined. The algorithm of preoperative planning and calculation of surgical approaches parameters was developed at the base of individual features of topography and histological structure of PCF mass lesion in various types of bone-meningeal frame. Conclusion. The usage of individual planning of surgical approach in 67 patients with PCF tumors allowed increasing the accuracy and decreasing the injury rate of surgical approach as well as decreasing the operation time, number and severity of postoperative complications.