40 years ago, in 1973, Catovsky first described four cases of T-cell prolymphocytic leukemia.   In 1994, Harris a pathologist from Boston and his colleagues made an effort to classify T-cell prolymphocytic leukemia.
What is the historical background or context of T-cell prolymphocytic leukemia?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What is the historical background or context of T-cell prolymphocytic leukemia? [/INST] \n 40 years ago, in 1973, Catovsky first described four cases of T-cell prolymphocytic leukemia.   In 1994, Harris a pathologist from Boston and his colleagues made an effort to classify T-cell prolymphocytic leukemia.</s>