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Updated: Jun 15, 2025

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Gene Regulation and Targeted Therapy in Gastric Cancer Peritoneal Metastasis: Radiological Findings from Dual Energy CT and PET/CT
Published on: January 22, 2018
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Advanced gastric cancer with peritoneal oligometastases treated with adaptive radiotherapy and concurrent
Abstract
Background:
There are no reports of concurrent chemoradiotherapy for gastric cancer with peritoneal oligometastases.
Case Description:
A 70-year-old man with gastric cancer and peritoneal oligometastases received concurrent adaptive radiotherapy and oral S-1. After radiotherapy, S-1 was discontinued, and 2 years later the tumor had completely regressed, with no recurrence or metastasis 6 years after radiotherapy.
Conclusion:
Peritoneal oligometastatic gastric cancer may be a candidate for curative treatment with concurrent adaptive radiotherapy and oral S-1.

