Infection in Spine PRE OP Cervical Epidural Abscess Sag Post OP Infection 2 Post Contrast 2 Cervical Epidural Abscess Pre OP Spontanous Spine inf 1 Pre MRI Spontanous Pyogenic Spine Inf 2 Spontanous Pyogenic inf Pre OP Spontaneous Spine Infection Spon Spine Inf Spine Infection 2 Specimen of Granulation Tissue