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Conditions and Treatments

Results for "B"

Beta Thalassemia

Beta thalassemia is caused by genetic defects that control the production of hemoglobin, and treatment includes regular blood transfusions.

Biliary Atresia

Biliary atresia is a chronic, progressive liver problem that becomes evident shortly after birth. 


A biopsy is a procedure in which doctors guide hollow needles into the body toward an area of interest and remove a portion (specimen) within the needle so that a pathologist can analyze it under the microscope.

Biotinidase Deficiency

An inherited disorder characterized by a deficiency of the biotinidase enzyme needed to metabolize a B vitamin.

Birth Defects

A "birth defect" is a health problem or physical change, which is present in a baby at the time he or she is born.

Birth Marks and Congenital Lesions

Birthmarks are areas of discolored and/or raised skin that are apparent at birth or within a few weeks of birth. Birthmarks are made up of malformed pigment cells or blood vessels.


A blister is a circular-shaped bump on the skin containing bloody or clear fluid.

Blood Stem Cell Collection

Peripheral blood stem cell (PBSC) collection is a procedure where volunteer donors (relatives or siblings) or patients donate their stem cells through apheresis for allogeneic and autologous blood and marrow transplantation.

Blood Transfusion

More than 2,700 patients receive blood transfusions each year at Children’s National’s hospital and Regional Outpatient Centers, including approximately 7,500 red blood cells, 2,000 plasma, 3,000 platelets and 900 cryoprecipitate units.