August 01, 2009
There are two staging systems that integrate data on the tumor mass but do not predict the possibility of progression.
These two systems are the Binet, used more in Europe, and Rai, which is used in United States.
Rai stages are divided into categories of low risk, intermediate and high. Stage 0 is considered low risk, steps 1 and 2 intermediate risk, 3 and 4 and as high risks.
