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Trousseau syndrome is a paraneoplastic syndrome associated with a risk of poor prognosis. We reviewed the survival time and prognosis of patients with Trousseau syndrome. We identified 40 cases from 28 reports of Trousseau syndrome due to pancreatic cancer. We analyzed 20 cases based on reports providing sufficient information on the stage/location of pancreatic cancer and survival time after Trousseau syndrome. The median survival time was 2.0 months. There was no statistical difference between performance status (PS) 0-1 and PS 4, stages I-III and IV, and pancreatic head and body/tail. However, statistically significant differences were noted between the median survival time of patients who continued treatment for pancreatic cancer even after Trousseau syndrome and those who discontinued treatment (P = 0.005). Although only a small number of cases were analyzed in this study, the results indicated that patients with pancreatic cancer who developed Trousseau syndrome had a poor prognosis, and chemotherapy should be continued, if possible., (© 2023. The Author(s).)