Abstract
Background
M1 esophageal carcinoma goes beyond localized disease and requires treatment with systemic therapy. M1 status is primarily divided into two categories: M1 lymph node metastasis and distant organ metastasis. Oligometastasis is defined as a state of limited metastatic disease, and surgery for oligometastasis of distant organs is reported to be beneficial in limited conditions. The aim of this study was to investigate resected cases of M1 lymph node metastases as the only metastatic site in stage IVB esophageal carcinoma.
Patients and Methods
This study was a single-center retrospective cohort study. Patients with esophageal carcinoma who underwent esophagectomy with curative intent between April 2017 and December 2021 were examined. Neoadjuvant chemotherapy was our standard therapy and administered in almost all cases. We hypothesized that four sites of metastatic M1LN (supraclavicular (no. 104), pretracheal (no. 106pre), posterior thoracic para-aortic (no. 112aoP), and abdominal para-aortic (no. 16a2lat) LNs) were potentially resectable M1LN (rM1LN) metastases with curative intent and compared the prognosis of patients with and without rM1LN metastasis.
Results
Six hundred eight-two patients were included in the study. Among these patients, 80 had rM1LN metastasis and received surgery for curative intent. Short-term safety outcomes were equivalent between patients with and without rM1LN metastases. After propensity score matching, there were no significant differences in overall survival between patients with and without rM1LN metastasis. Multivariate analyses revealed that the only independent prognostic factor was ypN status.
Conclusion
The present study suggests the feasibility and favorable OS in the patients with resection of rM1LN metastasis.
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Ken Kato reports consulting fees from Bristol Myers Squibb and Merck Sharp & Dohme, BeiGene, Roche, AstraZeneca, and Bayer; honoraria from Ono Pharmaceuticals, Bristol Myers Squibb, and Taiho; research funding from Ono Pharmaceuticals, Bristol Myers Squibb, Merck Sharp & Dohme, BeiGene, Chugai, Shionogi, AstraZeneca, and Bayer for research subjects outside the submitted work.
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Igaue, S., Nozaki, R., Utsunomiya, D. et al. Significance of Surgery for Resectable M1 Lymph Node Metastases Without Organ Metastasis in Esophageal Carcinoma in the Era of Neoadjuvant Treatment. Ann Surg Oncol 31, 1525–1535 (2024). https://doi.org/10.1245/s10434-023-14562-5
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DOI: https://doi.org/10.1245/s10434-023-14562-5