Abstract
Background
Definitive chemoradiotherapy (DCRT) is a curative treatment option for cT1bN0M0 esophageal squamous cell carcinoma (ESCC); however, local residual disease and recurrence after complete remission may occur. We aimed to identify endoscopic findings associated with the risk of non-radical cure (local remnant or recurrence) after DCRT for cT1bN0M0 ESCC.
Methods
We retrospectively analyzed 40 consecutive patients with cT1bN0M0 ESCC who had undergone DCRT between January 2007 and December 2017. We examined the endoscopic findings in patients with residual or recurrent (RR) disease (RR group) and those without RR disease [non-RR (NRR) group] after DCRT. We also evaluated outcomes after DCRT for each endoscopic finding.
Results
There were 10 patients in the RR group and 30 patients in the NRR group. The RR group had a significantly larger tumor size and a higher proportion of lesions with type 0–I. The 5-year relapse-free survival rate was significantly lower in type 0–I and in the presence of B3 vessels. Endoscopic findings in 15 patients with cT1bN0M0 ESCC, type 0–I, who underwent DCRT revealed significantly more reddish lesions in the RR group compared to the NRR group.
Conclusions
cT1bN0M0 ESCC large size, with B3 vessels, and type 0–I has a high risk of non-radical cure after DCRT, especially the reddish type 0–I, which may need to be considered for treatment similar to advanced cancer, including surgery with preoperative DCRT.
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Data availability
The datasets generated during and/or analyzed during the current study are not publicly available, but are available from the corresponding author on reasonable request.
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Conceptualization and methodology: YU, SO, and ST; Formal analysis and investigation: KI, HK, JM, HT, AT, KY, YH, HT, TK, RY, RH, IN, YM, and YN; Writing—original draft preparation: MF and YU; Writing—review and editing: YU, SO, and ST; Supervision: SO and ST.
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All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. Informed consent or substitute for it was obtained from all patients for being included in the study.
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Motomitsu Fukuhara, Yuji Urabe, Shiro Oka, Kazuki Ishibashi, Hirona Konishi, Jyunichi Mizuno, Hidenori Tanaka, Akiyoshi Tsuboi, Ken Yamashita, Yuichi Hiyama, Hidehiko Takigawa, Takahiro Kotachi, Ryo Yuge, Ryohei Hayashi, Ikuno Nishibuchi, Yuji Murakami, Yasushi Nagata, and Shinji Tanaka declare that they have no conflict of interest.
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Fukuhara, M., Urabe, Y., Oka, S. et al. Endoscopic findings suggestive of a high risk of non-radical cure after definitive chemoradiotherapy for cT1bN0M0 esophageal squamous cell carcinoma. Esophagus 20, 541–547 (2023). https://doi.org/10.1007/s10388-023-00999-w
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DOI: https://doi.org/10.1007/s10388-023-00999-w