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BACKGROUND: Tumor-produced high molecular weight insulin-like growth factor-II (big insulin-like growth factor-II) is considered to cause non-islet cell tumor hypoglycemia. This paper presents a case of surgically resected retroperitoneal liposarcoma that produced big insulin-like growth factor-II.CASE PRESENTATION: Here, we report the case of a 62-year-old woman who presented with an abdominal ma
