Mrs. olson was diagnosed as having a malignancy characterized by a progressive increase of abnormal leukocytes. this type of cancer is known as

The answer is leukemia. This cancer begins in the bone marrow where leucoblasts are formed. These lymphoblasts do not differentiate into normal leucocytes but proliferate in the blood in their blast-form. Some of the symptoms of Mr. Oslon would be feeling tired frequently, and having poor immunity.