Better patient outcomes with new breast cancer treatment

Better patient outcomes with new breast cancer treatment

25 Jun 2015

A new study by UCLA scientists has found that women diagnosed with breast cancer and treated with a one-week regimen of partial breast radiation after the surgical removal of the tumor, or lumpectomy, saw no increase in cancer recurrence or difference in cosmetic outcomes compared to women who received radiation of the entire breast for a period of up to six weeks after surgery. The study is one of the largest ever done on partial breast irradiation.

“A smaller area of treatment allows for a higher dosage per treatment”

The study, which lasted two decades, followed over 1,000 women who received partial breast irradiation after surgery, with an average follow-up of about seven years. The study was lead by Dr. Mitchell Kamrava, an assistant professor of radiation oncology at UCLA and member of the Jonsson Comprehensive Cancer Center.

Kamrava and his team found that with partial breast irradiation the total length of treatment can be reduced to a week because the smaller area of treatment allows for a higher dosage per treatment. Additionally, because partial breast radiation is more targeted, there is less exposure to vital organs like the lungs and the heart.

Current standard care leads to prolonged exposure to radiation

The new treatment is formally known as accelerated partial breast irradiation with interstitial multicatheter brachytherapy. It works by radiating only breast tissue in and around the area where the tumor was removed. The current standard of care, called whole breast conservation therapy, involves irradiating the entire breast after surgery, usually over the course of five to seven weeks. This results in prolonged exposure to radiation and can potentially lead to more side effects.

The next phase for Kamrava and his team will be to analyze the results of randomized trials comparing whole breast versus partial breast irradiation.

Source: Science Daily