A 50-year-old woman undergoes resection of a convexity meningioma. The surgeon achieves complete macroscopic removal including excision of the dural attachment and involved bone. According to the Simpson grading system for meningioma recurrence, what grade of resection is this?
- A Simpson Grade II
- B Simpson Grade I ✓
- C Simpson Grade III
- D Simpson Grade IV
Correct answer: B. Simpson Grade I
Explanation
Simpson Grade I is complete macroscopic removal including the dural attachment and any abnormal bone, carrying a recurrence rate of approximately 9% at 10 years. Grade II is complete removal with coagulation of the dural attachment only. Grade III is complete removal without resection or coagulation of dural attachment. Grade IV is subtotal resection. Grade V is simple decompression.
Reference: Bailey and Love's Short Practice of Surgery, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.