Radiation therapy

Radiation therapy is a cancer treatment that uses high-energy x-rays or other types of radiation to kill cancer cells or keep them from growing. External radiation therapy uses a machine outside the body to send radiation toward the area of the body with cancer. Sometimes total-body irradiation is given before a stem cell transplant.

Proton beam radiation therapy is a type of high-energy, external radiation therapy that uses streams of protons (tiny particles with a positive charge) to kill tumor cells. This type of treatment can lower the amount of radiation damage to healthy tissue near a tumor such as the heart or breast.

External radiation therapy is used to treat Hodgkin lymphoma and may also be used as palliative therapy to relieve symptoms and improve quality of life.

For a pregnant woman with Hodgkin lymphoma, radiation therapy should be postponed until after delivery, if possible, to avoid any risk of radiation exposure during fetal development. If treatment is needed right away, the woman may decide to continue the pregnancy and receive radiation therapy. A lead shield is used to cover the pregnant woman's abdomen to help protect the fetus from radiation as much as possible.