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An 82‒year‒old female presented to our hospital with abdominal fullness and loss of appetite. Abdominal computed tomography revealed a cholangiocarcinoma(Stage Ⅳ)with liver metastases and multiple lymph node metastases. In addition, we found a left ovarian teratoma(approximately 33 cm in diameter)occupying most of the abdominal cavity. She did not want an aggressive treatment for cholangiocarcinoma, but hoped to receive the best supportive care. She was treated with a fentanyl patch, although there was no symptomatic improvement. We explained that resection of the giant ovarian tumor may improve the symptoms. As a result, she accepted the surgery. The laparotomy was performed, and a left ovarian tumor(approximately 10,600 g in weight)was resected. Operation time was 2 hours and 35 minutes, and the amount of blood loss was small. No postoperative complications were observed. She started oral intake at POD 2. The abdominal symptom was relieved by the surgery, and she was discharged to her own home on POD 12. She was readmitted on POD 46 for general malaise, and died of advanced cholangiocarcinoma on POD 66. It was suggested that the QOL may be improved by resecting symptomatic benign tumors even in terminal cancer patients.

219 Background: Recently, several nutritional and inflammatory markers have been reported to be involved in cancer progression. The aim of this study is to evaluate whether nutritional and inflammatory biomarkers such as the modified Glasgow prognostic score (mGPS), the neutrophil‐to-lymphocyte ratio (NLR), the platelet‐to-lymphocyte ratio, the systemic-immune-inflammation index (SIII), controlling nutritional status (CONUT) score, prognostic nutritional index, and the lymphocyte‐to-monocyte ratio (LMR) could predict the prognosis in patients with unresectable pancreatic ductal adenocarcinoma (UR-PDAC) who underwent chemotherapy as first-line therapy, using disease-specific survival as the primary outcome. Methods: All UR-PDAC patients were retrospectively evaluated between January 2011 and May 2017 at Toyama University Hospital. Baseline clinicopathological characteristics and pre-treatment laboratory values such as absolute neutrophil, lymphocyte and platelet counts, C-reactive protein, albumin and CA19-9 levels, were collected. Results: A total of 184 patients were diagnosed as UR-PDAC. Among them, 151 patients who underwent chemotherapy were enrolled in this study. There were significant relationships between survival and elevated mGPS, elevated NLR, elevated SIII, decreased LMR, decreased serum cholinesterase level, and low CONUT score (p < 0.001, p < 0.001, p = 0.001, p < 0.001, p = 0.026 and p < 0.001, respectively, by log-rank test). The median survival time of patients with metastatic lesions was significantly shorter than that of patients with unresectable locally advanced PDAC (9.0 vs 15.5 months, respectively; p = 0.033). There was no significant difference in survival in pre-treatment CA19-9 level and tumor location. Multivariate analysis using Cox regression model revealed that NLR and CONUT score were independent prognostic factors. Conclusions: Pre-treatment NLR and CONUT score may predict clinical outcome in patients with UR-PDAC undergoing chemotherapy as first-line therapy.