Metastatic Cord Compression.

Epidural Spinal Cord Compression Scale

Bilsky Scale or ESCC

Grade 0 : Bone - only disease.
Grade 1 : Epidural extension WITHOUT cord compression. - 1a = No deformation of thecal sac. - 1b = Deformation of sac but NO cord abutment. - 1c = Deformation WITH cord abutment.
Grade 2 : Spinal cord compression WITH CSF around cord. Grade 3 : Spinal cord compression NO CSF around cord.