PMID: 32157049Mar 12, 2020Paper

A Case in Which pCR Was Obtained by S-1 plus Oxaliplatin Therapy Administered as Neoadjuvant Chemotherapy for Advanced Gastric Cancer

Gan to kagaku ryoho. Cancer & chemotherapy
Hironari MiyamotoKazuhiro Takeuchi

Abstract

A 78-year-old man presented with anemia, with a hemoglobin level of 6.7 g/dL, during follow-up for angina pectoris and paroxysmal atrial fibrillation. Upper gastrointestinal endoscopy revealed type 2 advanced gastric cancer(por), and abdominal computed tomography(CT)showed multiple lymph node metastases. He was diagnosed with advanced gastric cancer, cStage Ⅲ(cT3N1M0). He received neoadjuvant chemotherapy in 3 courses of SOX(80mg/m / 2/day of S-1 on days 1-14 and 7 days of rest, and 100mg/m2 of oxaliplatin on day 1). Grade 1 thrombocytopenia was observed, but it resolved without any other major side effects. Upper gastrointestinal endoscopy revealed a marked reduction in the primary lesion, and abdominal CT showed a significant reduction in the metastatic lymph node. We performed laparoscopic distal gastrectomy(D2+No. 14v)for advanced gastric cancer ycT1N(+)M0, ycStage ⅡA. Histological assessment revealed no evidence of residual tumor cells in the primary tumor or lymph nodes, and the histologic response was classified as Grade 3, pathological complete response(pCR). We report a case in which pCR was obtained by SOX therapy administered as neoadjuvant chemotherapy for advanced gastric cancer.

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