According to Spetzler Martin Grading System for AV malformations, the score of a AV malformation of size 3-6 mm with deep venous drainage and location near internal capsule is
Correct Answer: 5
Description: Ans. (d) 5Ref: Sabiston 20th Edition Page 1904* Spetzler - Martin Grading System is used for AVM grading in Brain.* This grading helps in management also.* Grade varies from 1-5 based on the following points: Size, Location and Deep venous drainage.* Lower score has good outcome.* Grade 1 AVM would be considered as small, superficial, and located in non-eloquent brain, and low risk for surgery.* Grade 4 or 5 AVM are large, deep, and adjacent to eloquent brain.Spetzler - Martin Grading System: for AVM brain Characteristic of lesionNumber of pointsSizeSmall (diameter <3cm)1 Medium (diameter 3-6cm)2 Large (diameter >6cm)3EloquenceNo eloquent siteEloquent site (sensorimoter, language, or thalamus; internal capsule; brain stem; cerebellar peduncles, or cerebellar nuclei)01Pattern of venous drainageSuperficial only0Any deep1
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