The risk factors of cervical lymph node recurrence after radiotherapy for neck negative nasophargneal carcinoma / 中华放射肿瘤学杂志

50 Gy in the upper neck as compared to those treated with seperate facial and neck fields to 0.05)Conclusions We suggest that patients with neck negative NPC should be treated with conjoint facio cervical lateral fields and prophylactic whole neck irradiation with more than 50 Gy to the upper neck.