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Fig. 1 | Radiation Oncology

Fig. 1

From: The feasibility analysis of omission of elective irradiation to level IB lymph nodes in low-risk nasopharyngeal carcinoma based on the 2013 updated consensus guideline for neck nodal levels

Fig. 1

Regional recurrence-free survival (a) and overall survival (b) compared by elective irradiation to level IB in low-risk patients with nasopharyngeal carcinoma. There wasn’t significant difference of regional control (98.4% vs. 97.4%, p = 0.921) or overall survival (89.1% vs.90.5%, p = 0.798) between those with or without elective irradiation to level IB. The estimated 5-year RRFS for those with/without elective irradiation was 65.9 months (95% CI: 64.0–67.7 months), 73.9 months (95% CI: 73.1–74.6 months), respectively. The estimated 5-year OS for those with/without elective irradiation was 62.8 months (95% CI: 59.7–65.9 months), 70.3 months (95% CI: 68.3–72.2 months), respectively

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Radiation Oncology

ISSN: 1748-717X

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