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Chemo for Advanced Breast Cancer Might Be Enough

Study finds no survival benefit in treating original tumor with surgery, radiation
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WebMD News from HealthDay

By Brenda Goodman

HealthDay Reporter

WEDNESDAY, Dec. 11, 2013 (HealthDay News) -- After chemotherapy, surgery and radiation to treat the original tumor might not benefit women with advanced breast cancer, a new study shows.

A minority of women with breast cancer discover they have the disease in its later stages, after it has spread to other parts of the body. These patients typically are started on chemotherapy to help shrink the cancerous growths and slow the disease's progress.

Beyond that, doctors have long wondered whether it's also a good idea to treat the original breast tumor with surgery or radiation even though the cancer has taken root in other organs.

"Our trial did show there's no benefit of doing surgery," said study author Dr. Rajendra Badwe, head of the surgical breast unit at Tata Memorial Hospital in Mumbai, India.

It didn't seem to matter if patients were young or old, if their cancer was hormone receptor positive or negative, or if they had a few sites of spreading cancer or a lot. Surgery didn't prolong their lives.

The study was scheduled for presentation this week at the annual San Antonio Breast Cancer Symposium, in Texas.

The results aren't shocking, since experiments in animals performed more than 30 years ago suggested that cutting out the primary tumor only egged on cancer at the secondary sites.

But studies in humans have suggested that removing the original cancer in the breast may increase survival. Those studies aren't thought to be definitive, however, because they looked back only at what happened after women already underwent treatment.

One expert not involved in the new study also questioned the selection of patients in the previous research.

"There's a lot of bias with that because you tend to operate on patients you think might do well to begin with," said Dr. Stephanie Bernik, chief of surgical oncology at Lenox Hill Hospital in New York City. "We definitely need more evidence to guide us."

To collect that evidence, researchers randomly assigned 350 women who responded to their initial chemotherapy to one of two courses of treatment. The first group had surgery followed by radiation to remove the original breast tumor and lymph nodes under the arms. The second group received only observation and appropriate medication.

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