患者女,56岁。因便血半年,经直肠镜检查诊断为直肠癌,于2002年9月7日入院,行直肠癌根治术。术后病理为溃疡型,中分化腺癌,浸达浆膜,无淋巴结转移。术后恢复良好。术后半月进行首次全身化疗。方案为第一组5%葡萄糖注射液500mL+氟尿嘧啶0.75g;第二组5%葡萄糖注射液500mL+亚叶酸钙 Female patient, 56 years old. Because of hematochezia for six months, the diagnosis of rectal cancer by colonoscopy, on September 7, 2002 admission, radical rectal cancer. Postoperative pathological ulceration, moderately differentiated adenocarcinoma, dip up serosa, no lymph node metastasis. Postoperative recovery is good. After the first half of surgery for systemic chemotherapy. The protocol consisted of 500 mL of 5% dextrose injection and 0.75 g of fluorouracil in the first group, 500 mL of 5% dextrose injection + calcium leucovorin in the second group