A Case of Trousseau Syndrome Complication during Chemotherapy for Advanced Gastric Cancer

The pathological condition which causes cerebrovascular disease through hypercoagulability associated with malignant tumors is known as Trousseau syndrome. Here, we report the case of a patient with Trousseau syndrome which developed as a complication during chemotherapy for advanced gastric cancer. A 70-year-old woman with multiple lymph node metastases of gastric cancer underwent TS-1 plus CDDP chemotherapy before surgery. She had symptoms of left hemiparesis during the first course of chemotherapy. She was diagnosed with acute cerebralinfarction using brain MRI, and blood tests indicated hypercoagulability. Therefore, it was strongly suspected that she had Trousseau syndrome. A total of 2 courses of chemotherapy were administered, along with anticoagulation therapy with edoxaban. She exhibited improved paralysis and received a totalgastrectomy after chemotherapy. According to recent reports, more than 90% of patients with malignant tumors have hypercoagulability, and more than 50% of them have thromboembolisms. It is therefore essential to obtain early diagnosis and provide anticoagulation therapy for cerebral infarction, and to provide treatment against malignant diseases in patients with Trousseau syndrome.