Fig. 2From: Surgical resection for clinical stage I high-grade neuroendocrine carcinoma of the lungKaplan-Meier curves for overall survival of the patients according to the clinical factors. a Overall survival of high-grade neuroendocrine tumors divided by interval from the first visit operation. b Overall survival of high-grade neuroendocrine tumors divided by Pro-GRP. c Overall survival of high-grade neuroendocrine tumors divided by operative procedureBack to article page