PMID- 38205500 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240112 IS - 2168-8184 (Print) IS - 2168-8184 (Electronic) IS - 2168-8184 (Linking) VI - 15 IP - 12 DP - 2023 Dec TI - Proton Beam Therapy for Lung Oligometastatic Recurrence in Patients With Esophageal Cancer. PG - e50343 LID - 10.7759/cureus.50343 [doi] LID - e50343 AB - Local treatment of oligometastatic esophagogastric cancer has been reported to improve overall survival (OS) compared to systemic therapy alone. This study evaluated the feasibility and safety of proton beam therapy (PBT) for the treatment of lung oligometastatic recurrence in esophageal cancer patients. This single-center historical cohort study enrolled 11 patients who underwent PBT for lung oligometastasis from esophageal cancer between 2010 and 2019. The selection criteria were that the primary esophageal cancer was controlled and no more than three lung metastases without outside lung tumors were present. OS, progression-free survival (PFS), and local control (LC) rates and adverse events (AEs) were assessed. Factors that may be related to OS were also investigated. The median follow-up period was 27.8 months (8.8-141.3 months). The one-, two-, and three-year OS rates were 81.8%, 72.7%, and 51.9%, respectively (median OS time: 43.7 months); PFS rates were 45.5%, 27.3%, and 27.3%, respectively (median PFS time: 8.8 months); and LC rates were 92.3%, 72.7%, and 72.7%, respectively. The eighth edition of tumor-node-metastasis (TNM) classification for esophageal cancer was the only significant OS-related factor (p = 0.0309). No grade >/= 3 AEs were observed. Based on the low incidence of AEs and acceptable LC rate, PBT is a feasible option for the treatment of lung oligometastasis in esophageal cancer patients. CI - Copyright (c) 2023, Yamaguchi et al. FAU - Yamaguchi, Hisashi AU - Yamaguchi H AD - Department of Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, Fukushima, JPN. FAU - Kato, Takahiro AU - Kato T AD - Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, JPN. FAU - Honda, Michitaka AU - Honda M AD - Department of Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, Fukushima, JPN. AD - Department of Surgery, Southern Tohoku General Hospital, Koriyama, JPN. FAU - Hamada, Koichi AU - Hamada K AD - Department of Minimally Invasive Surgical and Medical Oncology, Fukushima Medical University, Fukushima, JPN. AD - Department of Gastroenterology, Southern Tohoku General Hospital, Koriyama, JPN. FAU - Ishikawa, Yojiro AU - Ishikawa Y AD - Department of Radiology, Tohoku Medical and Pharmaceutical University, Sendai, JPN. FAU - Seto, Ichiro AU - Seto I AD - Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, JPN. FAU - Takagawa, Yoshiaki AU - Takagawa Y AD - Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, JPN. FAU - Suzuki, Motohisa AU - Suzuki M AD - Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, JPN. FAU - Kikuchi, Yasuhiro AU - Kikuchi Y AD - Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, JPN. FAU - Murakami, Masao AU - Murakami M AD - Department of Radiation Oncology, Southern Tohoku Proton Therapy Center, Koriyama, JPN. LA - eng PT - Journal Article DEP - 20231211 PL - United States TA - Cureus JT - Cureus JID - 101596737 PMC - PMC10781415 OTO - NOTNLM OT - esophageal cancer (ec) OT - isolated lung metastasis OT - oligometastasis OT - overall survival (os) OT - proton beam therapy COIS- The authors have declared that no competing interests exist. EDAT- 2024/01/11 07:43 MHDA- 2024/01/11 07:44 PMCR- 2023/12/11 CRDT- 2024/01/11 04:21 PHST- 2023/12/10 00:00 [accepted] PHST- 2024/01/11 07:44 [medline] PHST- 2024/01/11 07:43 [pubmed] PHST- 2024/01/11 04:21 [entrez] PHST- 2023/12/11 00:00 [pmc-release] AID - 10.7759/cureus.50343 [doi] PST - epublish SO - Cureus. 2023 Dec 11;15(12):e50343. doi: 10.7759/cureus.50343. eCollection 2023 Dec.