Final answer:
Leukemia is the term used to describe the presence of neoplastic blood cells in the peripheral blood and a high amount of blast cells in the bone marrow.
Step-by-step explanation:
Leukemia is the term used to describe the presence of neoplastic blood cells in the peripheral blood and a high amount of blast cells in the bone marrow. In leukemia, there is an abnormal proliferation of white blood cells, specifically blast cells, which typically should be found in the bone marrow and not in the peripheral blood. This condition can lead to a variety of symptoms and complications.