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Head Neck. 2014 May;36(5):687-93. doi: 10.1002/hed.23359. Epub 2013 Oct 17.

Comparative study on prophylactic irradiation to the whole neck and to the upper neck for patients with neck lymph node-negative nasopharyngeal carcinoma.

Author information

1
State Key Laboratory Oncology in Southern China, Guangzhou, People's Republic of China; Department of Radiation Oncology, Cancer Center of Sun Yat-Sen University, Guangzhou, People's Republic of China.

Abstract

BACKGROUND:

The purpose of this study was to investigate the prophylactic irradiation volume to neck drainage areas for patients with N0 classification nasopharyngeal carcinoma (NPC) treated by intensity-modulated radiotherapy (IMRT).

METHODS:

From January 2003 to October 2008, 270 patients with N0 classification (American Joint Committee on Cancer [AJCC] 2002 staging system) NPC who had undergone IMRT were retrospectively analyzed. Among all the patients, 171 patients received prophylactic upper-neck irradiation, and 99 patients received prophylactic whole-neck irradiation.

RESULTS:

At a median follow-up of 65.1 months (range, 4-106 months). The 5-year overall survival (OS), nodal recurrence-free survival (NRFS), and distant metastasis-free survival (DMFS) rates of the upper neck group and the whole neck group were 93.6% vs 90.9% (p = .553), 99.4% vs 99.0% (p = .278), and 98.8% vs 94.9% (p = .128), respectively. A total of 3 neck recurrences were found, including 2 from the whole neck group and 1 from the upper neck group. The latter (0.6%) was an out-of-field recurrence.

CONCLUSION:

Prophylactic irradiation to the upper neck (levels II, III, and VA) may be feasible for patients with neck lymph node-negative NPC.

KEYWORDS:

elective irradiation; intensity-modulated radiotherapy; nasopharyngeal carcinoma; neck lymph node-negative; retropharyngeal lymph node

PMID:
23606573
DOI:
10.1002/hed.23359
[Indexed for MEDLINE]

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