Microsurgery for large and giant petroclival meningioma

Abstract

Objective To summarize the experience of microsurgical removal of large and giant petroclival meningiomas.Methods The clinical data of 26 patients of large or giant petroclival meningiomas were collected.7 cases were conducted through subtemporal transpetrosal approach,15 retrosigmoid,2 supra -infratentorial (subtemporal and retrosigmoid sinus combined approach ) and 2 orbitozygomatic approach.Results Gross total resection (Simpson Grade Ⅰ or Ⅱ )was achieved in 13 patients,subtotal resection ( Simpson Grade Ⅲ) in 4,and partial resection ( Simpson Grade Ⅳ ) in 9.Conclusions To avoid blind pursuing total resection of tumors,and to seek to the balance between the extent of tumor resection and reducing postoperative complications,different surgical approaches should be chosen according to the types,size,growth patterns and encroachment areas of large and giant petroclival meningiomas. Key words: Meningioma; Petroclivus; Microsurgery