Hematopathologists - Washington, DC

What is Hematopathology?

Hematopathologists are physicians who analyze and diagnose disorders found in blood, bone marrow, spleen, and thymus (the chest gland which produces white blood cells). Hematopathologists work in a laboratory setting, where they may test patient specimens for disease. Hematopathologists examine samples of blood, bone marrow, lymph nodes, and lymphatic lesions, which are submitted by patients or their specialist physicians. Hematopathologists can test for the following hematological (blood-related) conditions:

Lymphoma, cancer of the lymphatic system
Leukemia, cancer of the blood cells
Multiple myeloma, cancer of the bone marrow
Sickle cell anemia, a red blood cell disorder
Anemia (red blood cell deficiency)
Thrombophilia (blood clotting disorders)

Hematopathologists detect diseases through a broad range of specialized testing techniques. Their interpretation of test results can facilitate an accurate patient diagnosis. These techniques include immunohistochemistry, a laboratory method which adds dyed antibodies to a tissue specimen. If the antibodies interact with antigens found in tissue samples, cancer may be present in the specimen. Flow cytometry uses laser beams and lights to measure and assess the cell characteristics of a sample. The cell characteristics may provide insight for the diagnosis of some cancers. To test for leukemia and lymphoma, hematopathologists may perform a peripheral smear examination. For this examination, a thin needle is used to extract a small marrow biopsy. Hematopathologists then prepare the biopsy sample on a slide under a microscope. Hematologists examine the sample's platelets and red and white blood cells, looking for abnormalities which may signal disease.

Other hematopathology testing techniques include:

Cytogenetic analysis, such as the fluorescence in situ hybridization (FISH) tests and polymerase chain reaction amplification, which identify genetic fragments of disease
Coagulation, which helps diagnose or detect genetic anomalies associated with bleeding and clotting disorders
Hemoglobinopathy, which helps diagnose or detect genetic anomalies associated with abnormal hemoglobin, which may result in conditions such as sickle cell anemia
Molecular testing, which helps analyze DNA and RNA for genetic anomalies associated with blood conditions

Hematopathologists may work alongside pathologists, oncologists, pathology technicians, hematologists, molecular cytogeneticists, and other medical professionals.