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Background <p>Major salivary gland tumors (MSGTs) are rare and pose significant treatment challenges. This study investigates the efficacy and safety of particle beam radiotherapy (PBRT) for patients with newly-diagnosed MSGTs.</p> Methods <p>We conducted a retrospective analysis of 82 patients treated at the Shanghai Proton and Heavy Ion Center (SPHIC) between August 2015 and March 2022. The cohort received various radiotherapy regimens based on surgical history and pathological risk factors. We evaluated survival outcomes, treatment toxicity, and potential prognostic factors.</p> Results <p>Our findings revealed promising 3-year survival rates: 94.3% for overall survival (OS), 81.3% for progression-free survival (PFS), 97.2% for locoregional control (LRC), and 82.6% for distant metastasis-free survival (DMFS). Acute and late toxicities were generally mild to moderate, with a favorable safety profile. Distant metastasis was the primary mode of treatment failure, emphasizing the need for early risk assessment.</p> Conclusion <p>As a potentially safe and efficient treatment option for newly-diagnosed MSGTs, proton and carbon ion radiation offers an excellent alternative for traditional methods. More investigation is required to determine the long-term results and relative efficacy of various treatment modality for major salivary gland cancer when compared to photon therapy.</p>

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Clinical outcomes of particle beam radiation therapy for patients with newly-diagnosed major salivary gland tumors

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年3月13日

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  • Qingting Huang,
  • Jiyi Hu,
  • Weixu Hu,
  • Jing Gao,
  • Haojiong Zhang,
  • Jiade Jay Lu,
  • Lin Kong

摘要

Background

Major salivary gland tumors (MSGTs) are rare and pose significant treatment challenges. This study investigates the efficacy and safety of particle beam radiotherapy (PBRT) for patients with newly-diagnosed MSGTs.

Methods

We conducted a retrospective analysis of 82 patients treated at the Shanghai Proton and Heavy Ion Center (SPHIC) between August 2015 and March 2022. The cohort received various radiotherapy regimens based on surgical history and pathological risk factors. We evaluated survival outcomes, treatment toxicity, and potential prognostic factors.

Results

Our findings revealed promising 3-year survival rates: 94.3% for overall survival (OS), 81.3% for progression-free survival (PFS), 97.2% for locoregional control (LRC), and 82.6% for distant metastasis-free survival (DMFS). Acute and late toxicities were generally mild to moderate, with a favorable safety profile. Distant metastasis was the primary mode of treatment failure, emphasizing the need for early risk assessment.

Conclusion

As a potentially safe and efficient treatment option for newly-diagnosed MSGTs, proton and carbon ion radiation offers an excellent alternative for traditional methods. More investigation is required to determine the long-term results and relative efficacy of various treatment modality for major salivary gland cancer when compared to photon therapy.