Chronic lymphocytic leukemia is a very slow disease?

Majority, not all: Majority, cll is an indolent, slow-progressing disease. However, not all of them behaving like that. There are different biology of cll that makes certain cll cases are more agressive than we used to think. Discuss with your hematologist/oncologist in detail regarding prognostic factors etc.

Can be: Based on the genetic factors of the leukemia (cll) it can be a slow-growing disease that may not require therapy for a long time, if ever.