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Table 1: 
Grading system for assessing the radiographic outcome of treatment in LM-LVM malformations of the head and neck
GradeDescription
1Complete regression of the lesion on cross-sectional imaging
2Near-complete regression with trace residual of the lesion on cross-sectional imaging
3Partial regression with <50% estimated volume of residual malformation
4Partial regression with >50% estimated volume of residual malformation
5Minimal or no gross interval change
6Regression of malformation in 1 region with progression into a previously uninvolved/untreated area
7Gross interval progression
Modifier BGranulation tissue formation in treatment bed