What is the term used for involvement of the entire cord?
Holocord. The word comes from greet "holo-" meaning "whole" or "entire" and not from hollow, as is sometimes thought to be the case.
In the lower thoracic cord is a vividly enhancing nodule with associated prominent serpiginous flow voids both within the mass and over the surface of the cord, and among the cauda equina. It is an isolated abnormality, associated with marked expansion of the entire cord by a large syrinx.