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The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

Table 1 Simpson Grading System

From: Long-term follow-up of motor function deterioration following microsurgical resection of middle third parasagittal and falx meningioma

Grade

Definition of corresponding resection

I

Macroscopically complete resection with excision of dural attachment and abnormal bone

II

Macroscopically complete resection with coagulation of dural attachment

III

Macroscopically complete resection without resection or coagulation of its attachment

IV

Subtotal resection

V

Simple decompression of the tumor

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