Laser

What Laser Therapy Means in Cancer Care

Laser therapy uses a focused, intense beam of light to remove or destroy cancer cells or abnormal tissue that could turn into cancer. The word "laser" stands for "light amplification by stimulated emission of radiation," which means the device produces a very narrow and powerful light beam. In cancer care, lasers can cut tissue, destroy tumors, or seal blood vessels to reduce bleeding during surgery. They are a type of local treatment, meaning they target a specific area of the body rather than affecting the whole body.

How Laser Therapy Is Used

Doctors use laser therapy most often for cancers and precancers on or just under the skin or the lining of internal organs. Common uses include basal cell skin cancer, non-small cell lung cancer, colorectal polyps, and precancers of the anus, cervix, penis, vagina, and vulva. Lasers can also help relieve symptoms caused by advanced cancer, such as bleeding or blockages in the windpipe, throat, colon, or stomach. For example, a laser can destroy part of a tumor blocking an airway to help a patient breathe better.

Laser therapy is usually given through an endoscope, a thin, flexible tube with a light and camera that doctors insert through natural openings like the mouth, nose, anus, or vagina. The laser light is then precisely aimed at the tumor or abnormal tissue. Different types of lasers are used depending on the treatment area: carbon dioxide (CO2) and argon lasers are often used for surface tissues like skin, while neodymium:yttrium-aluminum-garnet (Nd:YAG) lasers can reach deeper tissues inside the body.

Benefits and Limitations of Laser Therapy

One benefit of laser therapy is that it seals blood vessels as it cuts, which reduces bleeding and may cause less damage to nearby healthy tissue. This often means less pain, swelling, and scarring, and a shorter recovery time compared to traditional surgery. Laser treatments can sometimes be done on an outpatient basis, allowing patients to go home the same day.

However, laser therapy has some drawbacks. It requires special equipment and doctors trained in its use, which may not be available at all hospitals or cancer centers. The effects of laser therapy may not last long, so treatments might need to be repeated to get the full benefit. Also, laser therapy is often part of a larger treatment plan that may include surgery, chemotherapy, radiation, or immunotherapy.

What Patients Might Encounter

If your care team mentions laser therapy, you might hear about it as a way to treat certain cancers or precancers, or to help manage symptoms caused by tumors. You may see it listed in your treatment plan or medical reports. Because laser therapy is a local treatment, it targets specific areas rather than the whole body. It is important to ask your care team how laser therapy fits your unique situation, including what type of laser will be used, how many treatments you might need, and what side effects to expect.

Questions to Ask Your Care Team

When laser therapy is part of your care, consider asking: What type of laser will be used and why? How will the treatment be given? How many sessions will I need? What are the possible benefits and risks? Will laser therapy be combined with other treatments? Is this treatment available at my cancer center or will I need to go elsewhere? What symptoms or side effects should I watch for after treatment?

Understanding Laser Therapy in Context

Seeing the word "laser" in your medical records or hearing it from your doctor does not mean it is the only treatment or a cure by itself. Laser therapy is one tool among many in cancer care. Its use depends on the type of cancer, its location, how advanced it is, and your overall health. It is important to understand laser therapy as part of a personalized treatment plan rather than a standalone solution.

Safety and Next Steps

This information is meant to help you understand what laser therapy is and how it might be used in cancer care. It does not replace advice from your doctors. Always talk with your care team about what treatments are safe and appropriate for you. If you want to learn more or explore clinical trials involving laser therapy, your cancer center or the National Cancer Institute can provide resources and support. The best next step is to ask your care team how laser therapy applies to your diagnosis and treatment options.