PMID: 32156848Mar 12, 2020Paper

Two Cases of Liver Metastasis from Gastric Cancer Achieving Long-Term Survival Successfully Treated with Stereotactic Body Radiotherapy(SBRT)

Gan to kagaku ryoho. Cancer & chemotherapy
Yusuke AkamaruKunitaka Shibata

Abstract

We report 2 cases with long-term survival following stereotactic body radiotherapy(SBRT)for liver metastasis from gastric cancer. Case 1 was a 65-year-old man. We performed distal gastrectomy for gastric cancer with liver metastasis prior to chemotherapy due to pyloric stenosis. Postoperative S-1 chemotherapy was administered. Two liver metastases observed before the operation were temporarily reduced in size but subsequently enlarged; therefore, SBRT was performed 13 months postoperatively. The liver metastases showed a complete response(CR)and the patient is alive 4 years and 11 months after SBRT(6 years postoperatively). Case 2 was a 71-year-old woman. After performing distal gastrectomy, liver metastasis emerged during postoperative S-1 adjuvant chemotherapy; therefore, SBRT was performed 11 months postoperatively. She was then administered weekly paclitaxel. However, she underwent a right hepatic lobectomy 13 months after SBRT for suspected remnant or marginal recurrence by abdominal enhanced CT. Histopathological examination showed that the tumors contained fibrotic connective tissue with no viable cancer cell remnants; therefore, the therapeutic effect was determined to be of Grade 3. The patient is alive without recurre...Continue Reading

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