Final answer:
Agranulocytosis (true) is a condition where leukocyte levels are extremely low due to the diminished production of neutrophils, a type of granulocyte. This condition results in an increased risk of infection as the immune system is compromised.
Step-by-step explanation:
The statement that agranulocytosis (also called neutropenia) is a blood dyscrasia in which leukocyte levels become extremely low is true. Agranulocytosis is a severe form of leukopenia, where the production of leukocytes, particularly neutrophils, is diminished, leading to an increased risk of infection. It is important to distinguish between agranulocytosis and leukocytosis, which is a condition characterized by excessive proliferation of leukocytes, often resulting in nonfunctional cells that don't adequately protect the body against disease.
Neutrophils are a type of granulocyte, and when their count is significantly low, as in agranulocytosis, a patient's immune system is compromised. Granulocytes, including neutrophils, are characterized by visible granules in their cytoplasm, as opposed to agranular leukocytes like lymphocytes, which lack these granules.