Bone metastases are caused when a malignant tumor spreads to the bone. They can lead to debilitating effects including pain, fractures and paralysis due to spinal cord compression. The care of these patients requires collaboration between several types of cancer treatment specialists.
External beam radiation therapy (EBRT) provides successful pain relief in 50 to 80 percent of patients with little risk of side effects. However, the widespread variation in practice patterns between radiation oncologists presented an opportunity to standardize care through the construction of a formal treatment guideline.
Some of the committee's findings include:
EBRT continues to be the mainstay for treating bone metastases.
Both single doses and longer courses of radiation have shown similar pain relief outcomes, and each has advantages. A single course has proven more convenient for patients and caregivers, while longer courses have a lower incidence of repeat treatment to the same site.
Repeat irradiation with EBRT might be feasible in some circumstances, though the details of its effectiveness and safety are still to be determined.
Bisphosphonates do not eliminate the need for EBRT for painful metastases, and they act effectively when combined with EBRT.
Stereotactic body radiation therapy can be considered for patients with a newly discovered or recurrent tumor in the spinal column or paraspinal areas; however, it is suggested that stereotactic treatment be reserved for patients who meet specific criteria, who are treated at centers with sufficient training and experience, and who are part of a therapeutic trial.
Radionuclides are most appropriate for patients who have several sites of painful osteoblastic metastases (like those that are commonly associated with prostate cancer) that cannot be conveniently or safely treated with EBRT.Surgical decompression and stabilization plus postoperative radiation therapy should be considered for some patients with single-level spinal cord compression or spinal instability.
Stephen Lutz, M.D., lead author of the guideline and a radiation oncologist at Blanchard Valley Regional Cancer Center in Findlay, Ohio, said, "Radiation therapy is commonly used to treat bone metastases and has been proven very effective, but with the variety of radiation therapies available and range of successful fractionation schedules, it's important to provide physicians with this guideline to assure they are using the most appropriate methods in treating patients."
For a copy of the guideline, e-mail firstname.lastname@example.org.
ASTRO is the largest radiation oncology society in the world, with more than 10,000 members who specialize in treating patients with radiation therapies. As the leading organization in radiation oncology, biology and physics, the Society is dedicated to improving patient care through education, clinical practice, advancement of science and advocacy. For more information on radiation therapy, visit www.rtanswers.org. To learn more about ASTRO, visit www.astro.org
Beth Bukata | EurekAlert!
Hot cars can hit deadly temperatures in as little as one hour
24.05.2018 | Arizona State University
3D images of cancer cells in the body: Medical physicists from Halle present new method
16.05.2018 | Martin-Luther-Universität Halle-Wittenberg
The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.
Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...
A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.
The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
25.05.2018 | Event News
02.05.2018 | Event News
13.04.2018 | Event News
25.05.2018 | Event News
25.05.2018 | Machine Engineering
25.05.2018 | Life Sciences