The authors have disclosed that they have no financial interests, arrangements, affiliations, or commercial interests with the manufacturers of any products discussed in this article or their competitors. This work was supported by grants from National Natural Science Foundation of China (No.81572962); Health & Medical Collaborative Innovation Project of Guangzhou City, China (No. 201400000001); National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (2014BAI09B10); the Sun Yat-sen University Cultivating Foundation (16ykpy29); and the Planned Science and Technology Project of Guangdong Province (No. 2013B021800175).
See JNCCN.org for supplemental online content.
Pan JJ, Ng WT, Zong JF et al.. Proposal for the 8th edition of the AJCC/UICC staging system for nasopharyngeal cancer in the era of intensity-modulated radiotherapy. Cancer 2016;122:546–558.
Ng WT, Lee AW, Kan WK et al.. N-staging by magnetic resonance imaging for patients with nasopharyngeal carcinoma: pattern of nodal involvement by radiological levels. Radiother Oncol 2007;82:70–75.
Som PM, Curtin HD, Mancuso AA. Imaging-based nodal classification for evaluation of neck metastatic adenopathy. AJR Am J Roentgenol 2000;174:837–844.
Sze H, Chan LL, Ng WT et al.. Should all nasopharyngeal carcinoma with masticator space involvement be staged as T4? Oral Oncol 2014;50:1188–1195.
Xiao Y, Pan J, Chen Y et al.. Prognostic value of MRI-derived masticator space involvement in IMRT-treated nasopharyngeal carcinoma patients. Radiat Oncol 2015;10:204.
Zhang GY, Huang Y, Cai XY et al.. Prognostic value of grading masticator space involvement in nasopharyngeal carcinoma according to MR imaging findings. Radiology 2014;273:136–143.
Lai SZ, Li WF, Chen L et al.. How does intensity-modulated radiotherapy versus conventional two-dimensional radiotherapy influence the treatment results in nasopharyngeal carcinoma patients? Int J Radiat Oncol Biol Phys 2011;80:661–668.
Ng SH, Chan SC, Yen TC et al.. Staging of untreated nasopharyngeal carcinoma with PET/CT: comparison with conventional imaging work-up. Eur J Nucl Med Mol Imaging 2009;36:12–22.
Yen TC, Chang JT, Ng SH et al.. The value of 18F-FDG PET in the detection of stage M0 carcinoma of the nasopharynx. J Nucl Med 2005;46:405–410.