The treatment of meningioma is mainly surgical, and the following factors should be taken into consideration: if the tumor is not at the skull base, early surgery and total resection of the tumor should be strived for; if the tumor is at the skull base and located in the saddle node, olfactory groove, pterygoid plate, pontocerebellar angle, etc., early surgery should be performed; for flat meningioma of the pterygoid crest and flat type of slope meningioma, if there is no high cranial pressure, surgery may be suspended. Grading of surgical resection of meningioma: In order to judge the efficacy and prognosis of surgery, some scholars have proposed the following surgical grading criteria, which are now adopted: Grade I: complete sarco-ocular resection of tumor, including resection of dura mater and skull adhering to the tumor and the involved venous sinus; Grade II: complete sarco-ocular resection of tumor, with only electrocoagulation and cautery of dura mater adhering to the tumor; Grade III: complete sarco-ocular resection of tumor, without resection of dura mater adhering to the tumor or electrocoagulation, with involvement of venous sinus Grade IV: partial resection of tumor; Grade V: craniotomy and decompression only, with or without biopsy of tumor. Some articles now define the degree of resection of the dura mater with rat tail sign as grade 0. Postoperative recurrence of meningioma: Most meningiomas are able to be surgically resected in their entirety to obtain a radical cure, and even those that cannot be resected in their entirety can obtain a longer period of remission. However.
Some meningiomas are prone to recurrence, and even in those with grade I or II surgical resection, the recurrence rate can be as high as 9% to 32%.