[Long-Term Survival of a Patient with Advanced Antral Gastric Cancer Successfully Treated with Multidisciplinary Therapy].

We report the case of long-term survival of a patient with advanced antral gastric cancer with multiple paraaortic lymph nodes metastasis who was successfully treated with multidisciplinary therapy. A 70-year-old female was admitted to our hospital complaining of vomiting. Upper gastrointestinal endoscopy revealed a Type 3 tumor in the gastric antrum. Computed tomography(CT)showed a marked decrease in the size of the primary gastric tumor and lymph nodes after 9 courses of mFOLFOX6 therapy. Subsequently, 7 courses of paclitaxel plus ramucirumab(PTX plus Rmab)therapy and 10 courses of nivolumab therapy were administered. After nivolumab therapy, marked shrinkage of the lymph nodes was observed on CT. Distal gastrectomy with D2(+ #16a2+b1)lymph node dissection was performed. The pathological finding was ypT0N1M0 with a Grade 3 effect of the chemotherapy. After 6 months of adjuvant chemotherapy with S-1, CT revealed supraclavicular lymph node metastases. After 4 courses of nivolumab therapy, CT showed a marked increase in the size of the lymph node. Consequently, the regimen was changed to irinotecan. After 16 courses of irinotecan therapy, CT showed a marked shrinkage in the size of the lymph node. The patient is currently alive with no signs of recurrence for 5 years, ie, since the initiation of the multidisciplinary therapy.