Hematology is the study of blood, the blood-forming organs, and blood diseases. Hematology includes the study of etiology, diagnosis, treatment, prognosis, and prevention of blood diseases that affect the production of blood and its components, such as blood cells, hemoglobin, blood proteins, and the mechanism of coagulation.
Hematology is a distinct sub-specialty of internal medicine, separate from, but overlapping with the sub-specialty of medical oncology.
Oncology is the branch of medicine that researches, identifies, and treats tumors, which is a term for cancer.
Oncology is concerned with:
- The diagnosis of any cancer in a person
- Therapy (e.g. surgery, chemotherapy, radiotherapy and other modalities)
- Follow-up of cancer patients after successful treatment
- Palliative care of patients with terminal malignancies
- Ethical questions surrounding cancer care
- Screening efforts:
- of populations, or
- of the relatives of patients (in types of cancer that are thought to have a hereditary basis, such as breast cancer)