Hematopathology is the laboratory study of blood and blood disorders. A hematopathologist is a pathologist who determines possible causes of blood diseases by studying blood and tissue specimens under a microscope and other technical instruments. The pathologist has the knowledge and skill to diagnose anemia, bleeding disorders, leukemia, and lymphoma. The pathologist also consults with the patient’s physician to decide on a treatment based on the diagnosis.

According to 2005 Census estimates, Washington, D.C. has a population of 550,521. Of this population, 110,240 are under the age of 18 and 66,591 are at or above the age of 65.