Abstract
A 58-year-old woman diagnosed with gastric carcinoma underwent total gastrectomy with D2 lymph node dissection in September 2005. The definitive diagnosis was f Stage IIIB gastric carcinoma (pT3, pN2, sH0, sP0, pCY0, cM0) and surgery had curability B based on the Japanese classification of gastric carcinoma, 13th edition. Histological findings of resected specimens showed poorly differentiated non solid adenocarcinoma (por 2). She underwent adjuvant chemotherapy at 100mg/day of oral TS-1 from November 2005. She reported an abnormal throat sensation 3 days after beginning TS-1 treatment. Her left palatine tonsil had swollen to 30mm and biopsied samples showed group V (por2). The left tonsillar tumor was diagnosed as metastasis from gastric carcinoma, because the biopsied samples were similar pathologically to the resected gastric specimen. No other metastatic sites were seen in computed tomography. A complete response was acquired in the metastatic tonsillar tumor 14 days after TS-1 treatment and maintained for 8 months in June 2006. TS-1 treatment may thus contribute to good quality of life and improved poor prognosis.
