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Removal of lymph nodes during surgery for thyroid cancer may be beneficial
Date:12/20/2011

of central neck lymph nodes. Patients were followed for an average of three-and-a-half years following surgery.

The standard pre-operative evaluation of all patients included a fine-needle biopsy of the primary thyroid tumor and determination of neck lymph-node disease status through physical examination and ultrasound of the neck.

The rate of disease recurrence in the entire study population was 6.9 percent. The researchers found that the need for central neck re-operation was significantly lower among patients who had undergone the routine initial central neck lymph-node dissection, compared with those who had undergone only thyroid removal (1.5 percent vs. 6.1 percent).

Stimulated thyroglobulin levels were also lower among patients in Group B, which may demonstrate a more thorough clearing of disease in the patients who had both thyroid and neck lymph-node removal procedures, the researchers said.

"This significant reduction in the need for further surgery in the critical central area of the neck is important, since it reduces risk to the many vital structures housed here, such as the nerves supplying the voice," said study co-author Dr. Mark Sywak of the University of Sydney in Australia.

UCLA's Yeh noted that blood thyroglobulin levels are a useful and sensitive measure in tracking disease recurrence, especially when many tumors in this area are too tiny to be detected using a physical exam or ultrasound.

Rates of temporarily low calcium levels, a common side effect, were significantly higher in Group B patients (9.7 percent), who had neck lymph nodes removed, than in Group A patients (4.1 percent) who had thyroid-removal surgery alone. The rate of long-term complications was low for both groups about 1 percent.

The researchers said the next step may be to conduct a prospective, randomized clinical trial to further assess the impact of routinely removing central neck lymph nodes duri
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Contact: Rachel Champeau
rchampeau@mednet.ucla.edu
310-794-2270
University of California - Los Angeles Health Sciences
Source:Eurekalert

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