Purpose To develop a simple and reproducible grading system to assess the outcome of treatment for LM.
Methods and technique The availability of noninvasive MRI imaging lends itself to a reliable and reproducible ability to compare pretreatment, during treatment and after treatment imaging, and the burden of disease that remains after treatment
Materials 20 consecutive cases of H&N LM before and after treatment, was reviewed by 2 independent diagnostic neuroradiologists using our 7 points grading system
1: Complete disappearance
2: Significant near-complete disappearance.
3: Significant decrease in the residual malformation.
4: Decrease of the malformation at one region but increase in another area.
5: Decrease of the malformation but presence of a new area of noncystic changes
6: No change or minimal change.
7: Worsening of pretreatment imaging.
Results Both scored the same on all 20 exams.
Conclusion Our grading system is simple, and reproducible in LM throughout the body, permitting objective comparison between different treatments.
Disclosures A. Berenstein: None.
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