Surgeons are not always including radiation oncologists early enough in a patient's treatment decision-making process, leaving some patients uninformed of all of their treatment options and potentially leading to more mastectomies over breast-conserving therapy, according to a study in International Journal of Radiation Oncology·Biology·Physics, the official scientific journal of the American Society for Radiation Oncology (ASTRO).

Multidisciplinary collaboration in cancer care is quickly becoming the standard philosophy in treating cancer patients.

However, because different specialists have varying opinions on a patient's best course of treatment, not all specialists are working together.

Researchers interviewed 318 surgeons and 160 radiation oncologists on their practice patterns and attitudes toward multidisciplinary care.

Almost 30 percent of radiation oncologists said their biggest challenge was other providers failing to include them in the treatment decision process early enough, and nearly half of surgeons admitted that few or almost none of the breast cancer patients they had treated in the past year had consulted with a radiation oncologist before undergoing surgery.

Almost 100 percent of both specialties indicated that they do have access to a multidisciplinary tumour board, which allows physicians from different specialties to discuss cases with one another. However, despite access to these discussions, a substantial proportion of radiation oncologists in this study reported concern that they were not involved early enough.

It was found that the desire to avoid radiation was strongly correlated with a patient's decision to undergo mastectomy, but many patients who have this procedure still need post-surgery radiation. Researchers concluded that patients weren't always aware of this, and if they had been informed before surgery that radiation may be necessary whether undergoing mastectomy or breast conservation, some might have chosen to attempt breast conservation instead.

Another underlying problem in true multidisciplinary care is differing opinions among specialties over the standard treatment in common breast cancer cases. Surgeons and radiation oncologists varied greatly in how they would treat an early-stage breast cancer and what is appropriate margin width.

Because radiation oncologists appear to be less conservative than surgeons with regard to acceptable margin width, earlier involvement of radiation oncologists in decision-making might lower mastectomy rates. Because of this, the researchers also called for developing institutional guidelines or national guidelines to avoid provider-based variations in care.

"If such efforts to increase multidisciplinary involvement before surgery are successful, patients may benefit from exposure to a variety of viewpoints before proceeding with definitive local therapy decisions," Reshma Jagsi, MD, DPhil, lead author of the study and a radiation oncologist at the University of Michigan Comprehensive Cancer Center in Ann Arbor, Mich., said. "This could lead to their decision-making process being more informed and more in accord with their preferences."

Source: ASTRO