The Kernohan grading system was fist described in 1949 and is no longer used. It was replaced by the WHO grading system.
Grade | Description |
---|---|
Grade 1 | benign astrocytoma |
Grade 2 | low-grade astrocytoma |
Grade 3 | anaplastic astrocytoma |
Grade 4 | glioblastoma |
1. KERNOHAN JW, MABON RF. A simplified classification of the gliomas. Proc Staff Meet Mayo Clin. 1949 Feb 2;24(3):71–5.