“…In the present case, neoadjuvant chemotherapy with 5-fluorouracil plus cisplatin was performed because the Japan Clinical Oncology Group (JCOG) 9907 study recommended neoadjuvant chemotherapy followed by surgery as a standard treatment for localized advanced squamous cell carcinomas of the thoracic esophagus [33,34]. In addition, G-CSF-producing tumors have an aggressive clinical course [7,9,10,35]. Chemotherapy with 5-fluorouracil plus cisplatin seemed to be partially effective in the present case, as the leukocytosis was improved, though the serum level of G-CSF was not decreased.…”