Scholarlink

Background <p>In nasopharyngeal carcinoma (NPC) patients, two radiation target delineation patterns are used for the cervical lymph node area.</p> Purpose <p>This study compares the efficacy and toxicity of two radiation target volume delineation patterns for planning target volumes (PTVs) in NPC patients.</p> Methods <p>This retrospective analysis included 387 non-metastatic NPC patients treated with concurrent chemoradiotherapy from January 2017 to December 2020. Patients were divided into two groups: the 2-PTV group with two dose gradients (50–54 Gy and 66–70 Gy) and the 3-PTV group with an additional 60–63 Gy dose.</p> Results <p>After a median follow-up of 51.2 months, the 3-year regional relapse-free survival (RRFS) showed no significant differences between the 3-PTV and 2-PTV groups (96.6% [95% confidence interval (CI): 96.5%–96.8%] and 96.3% [95% CI: 96.2%–96.3%]). In the N3 subgroup, the 3-year RRFS was also comparable between the 3-PTV and 2-PTV groups (96.2% [95% CI: 76%–99%] vs. 95% [95% CI: 69%–99%], <i>p</i> = 0.727). Importantly, the 2-PTV group demonstrated significantly lower rates of grade 3/4 dermatitis (5.1% vs. 16.5%; HR 0.88, 95% CI: 0.82–0.94, <i>p </i>= 0.002) and xerostomia (49.6% vs. 67%; HR 0.78, 95% CI: 0.72–0.84, <i>p</i> = 0.002). </p> Conclusions <p>The 2-PTV regimen achieved equivalent survival outcomes while significantly reducing treatment-related toxicities compared to the 3-PTV approach. These results suggest that the 2-PTV strategy may offer a more favorable therapeutic profile for NPC patients, particularly in minimizing severe dermatitis and xerostomia.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The impact of different cervical planning target volume designs on efficacy and toxicity in nasopharyngeal carcinoma: a single-center retrospective study

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年3月17日

查看全文
  • Lin Wang,
  • Hui-Min Wang,
  • Fan Tang,
  • Yan-Ting Zhang,
  • Rong-Rong Shi,
  • Sheng-Hui Wang,
  • Si-Chao Liang,
  • Liao-Ming Gao,
  • Zhi-Ting Chen,
  • Bao-Feng Li,
  • Bei Chen

摘要

Background

In nasopharyngeal carcinoma (NPC) patients, two radiation target delineation patterns are used for the cervical lymph node area.

Purpose

This study compares the efficacy and toxicity of two radiation target volume delineation patterns for planning target volumes (PTVs) in NPC patients.

Methods

This retrospective analysis included 387 non-metastatic NPC patients treated with concurrent chemoradiotherapy from January 2017 to December 2020. Patients were divided into two groups: the 2-PTV group with two dose gradients (50–54 Gy and 66–70 Gy) and the 3-PTV group with an additional 60–63 Gy dose.

Results

After a median follow-up of 51.2 months, the 3-year regional relapse-free survival (RRFS) showed no significant differences between the 3-PTV and 2-PTV groups (96.6% [95% confidence interval (CI): 96.5%–96.8%] and 96.3% [95% CI: 96.2%–96.3%]). In the N3 subgroup, the 3-year RRFS was also comparable between the 3-PTV and 2-PTV groups (96.2% [95% CI: 76%–99%] vs. 95% [95% CI: 69%–99%], p = 0.727). Importantly, the 2-PTV group demonstrated significantly lower rates of grade 3/4 dermatitis (5.1% vs. 16.5%; HR 0.88, 95% CI: 0.82–0.94, p = 0.002) and xerostomia (49.6% vs. 67%; HR 0.78, 95% CI: 0.72–0.84, p = 0.002).

Conclusions

The 2-PTV regimen achieved equivalent survival outcomes while significantly reducing treatment-related toxicities compared to the 3-PTV approach. These results suggest that the 2-PTV strategy may offer a more favorable therapeutic profile for NPC patients, particularly in minimizing severe dermatitis and xerostomia.