Comprehensive Cancer Centers are located all over the Globe. They are facilities where the treatment of Cancer, any kind, is their sole reason for existance. Some centers are famous and some more low profile and obscure. For instance, in the little town closest to me they have an oncologist, that comes on day a week and regular nurses in the little hospital give Chemo treatments, etc. They do not have a linear accelerator so rad therapy is not used. That would be a perfect example of a NON comprehensive entity.
Darrell