並列タイトル等Clinical Outcomes of Proton Beam Therapy for Ground-Glass Opacity-Type Lung Cancer
学位博士(医学)
Doctor of Philosophy in Medical Science
一般注記博士論文全文, 博士論文要旨, 最終試験結果の要旨, 論文審査の要旨
Purpose: Surgery is the standard treatment for early-stage non-small cell lung cancer (NSCLC), including ground-glass opacity (GGO)-type lung cancer. However, some patients are inoperable or refuse to undergo surgery. To explore whether proton beam therapy (PBT) can be an alternative to surgical resection in these patients, this study aimed to examine the retrospective treatment outcomes of patients with GGO-type lung cancer who underwent PBT.
Patients and Methods: Patients with stage I NSCLC and GGOs who underwent PBT at the Medipolis Proton Therapy and Research Center (Kagoshima, Japan) between April 2011 and September 2015 were included. Patients were treated with a total dose of 66 GyE delivered in 10 fractions. Survival curves were calculated using the Kaplan–Meier method, and treatment-related adverse events (AEs) were assessed.
Results: A total of 48 patients (median age: 70.9 ± 9.2 years; men: 54.2%) were analyzed, among whom 53 tumors were observed. The 3-year overall survival rate after PBT was 91.7% (95% confidence interval [CI], 79.3– 96.8%), the 3-year disease-free survival rate was 85.4% (95% CI: 71.8– 92.8%), and the 3-year local control rate among 53 tumors was 92.5% (95% CI: 81.1– 97.1%). During the 3-year follow-up period, 4 patients died, and 3 survived despite recurrence or metastasis. Common AEs were radiation pneumonitis (89.6%), rib fracture (27.1%), and cough (27.1%). None of the patients developed grade ≥ 3 treatment-related AEs.
Conclusion: The results of this study suggest that PBT may be a promising alternative for patients with GGO-type lung cancer when surgical resection is not feasible, with excellent survival outcomes and tolerable treatment-related AEs.
Ichiro Nagata, Takashi Ogino, Takeshi Arimura, Takashi Yoshiura
Clinical Outcomes of Proton Beam Therapy for Ground-Glass Opacity-Type Lung Cancer
Lung Cancer: Targets and Therapy 2020:11 105–111
https://doi.org/10.2147/LCTT.S270283
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）