DEAR MAYO CLINIC: I’ve been recognized with a mind tumor and suggested to have radiation remedy. I am very nervous about this and the dangers for me, my household and, doubtlessly, one other most cancers prognosis. Are you able to clarify why radiation remedy might be proper for me?
ANSWER: Radiation remedy has been used to deal with most cancers for the reason that starting of the twentieth century. The sort of therapy continues to be one of the crucial efficient remedies for cancerous (malignant) and noncancerous (benign) mind tumors. How it’s delivered — and the know-how used — has continued to evolve and enhance.
Most sufferers with mind tumors obtain one among two kinds of radiation: exterior beam radiation, through which the tumor is handled over the course of a number of weeks, or radiosurgery, through which sufferers obtain a excessive dose of radiation in a single to 5 remedies to destroy the tumor.
Stereotactic radiosurgery makes use of 3D imaging to focus on excessive doses of radiation to the tumor with minimal impression on surrounding wholesome tissue. It’s utilized in small cancerous and noncancerous tumors and may be delivered in a number of methods:
- Gamma Knife: A Gamma Knife isn’t a knife in any respect however relatively many tiny beams of radiation centered on a tumor with excessive accuracy.
- Linear accelerator: A linear accelerator goals high-energy beams to a exact level on the physique.
- Proton beam: Utilizing positively charged particles in atoms, proton remedy is targeted on the tumor; just about not one of the radiation exits past the tumor.
Radiosurgery targets every tumor individually and helps to spare regular tissue from being handled with radiation.
Once I communicate to sufferers, I typically spotlight a number of benefits of radiation remedy:
Radiation therapy plans are tailor-made to every affected person.
Radiation remedy isn’t one-size-fits-all. The amount, dose, sort and period of radiation are tailor-made to suit every individual and their particular tumor. A therapy plan is designed that considers the dimensions, location and sort of your mind tumor. Radiation remedy can be utilized to deal with mind tumors by itself or after surgical procedure, to make sure that leftover most cancers cells are destroyed.
Higher precision.
Radiation remedy have to be precisely delivered to efficiently destroy the tumor and stop the tumor from coming again. Enhancements made through the years — together with improved imaging to raised goal the tumor and align the affected person throughout radiation therapy — permit us to reduce injury to surrounding tissues and organs. Right now, the accuracy with which we will ship the therapy is inside millimeters, thus limiting extra publicity of wholesome tissues to radiation.
Higher precision has allowed for a more moderen method in radiation remedy, referred to as hypofractionated stereotactic radiotherapy, which delivers excessive doses of radiation over two to 5 days to destroy the tumor.
For example, bigger mind tumors have been troublesome to deal with with radiosurgery as the danger of therapy will increase with the dimensions of the tumor. Nonetheless, analysis has proven that if we unfold that dose over two to 5 days as a substitute of sooner or later, the tolerance is best, and we will typically obtain a more practical dose for bigger tumors.
Although uncomfortable side effects from mind radiation differ, fatigue and hair loss are probably the most reported. Nonetheless, most sufferers discover they will proceed their common actions all through therapy.
Improved security.
A standard false impression when sufferers hear the phrase radiation is that radiation will trigger most cancers. Whereas that’s attainable, the danger of growing a second most cancers from radiation is extraordinarily low. Trendy radiation remedy strategies have improved effectiveness and security, and radiation oncologists proceed to find methods to restrict publicity and cut back the danger of secondary cancers from radiation.
You will need to word that if a secondary most cancers have been to happen from radiation remedy, it will not going develop till a few years after radiation publicity. Additionally, the danger of growing secondary most cancers decreases with time, in accordance with the American Most cancers Society.
One other false impression is that radiation remedy can pose a threat to folks round you. Exterior beam radiation passes proper via the physique like an X-ray. Sufferers don’t depart their remedies radioactive. You’ll not expose anybody to radiation by receiving any such therapy.
Radiation remedy continues to evolve via analysis performed by Mayo Clinic and others. Along with advances in equipment, imaging has improved to assist information extra correct radiation therapy for sufferers.— Jennifer Peterson, M.D., Radiation Oncology, Mayo Clinic, Jacksonville, Florida
