Medical Oncologists also specialize in Hematology (the diagnosis and treatment of blood-related disorders). Hematology is a distinct subspeciality of internal medicine, separate from but overlapping with the subspecialty of medical oncology. Cancer Care Center’s hematology team examines and treats diseases that are caused by imbalances of red blood cells, white blood cells and platelets, and their relative proportions and general cell health, notably leukemia, anemia and thrombocytopenia.