[Pathological Complete Response in a Case of Multiple Liver Metastases from Rectal Cancer Treated with XELOX plus Bevacizumab(Bev)Therapy].

ABSTRACT

The patient was a 56-year-old woman who had synchronous multiple liver metastases and underwent laparoscopic-assisted high anterior resection for rectal cancer. According to the Japanese classification of colorectal carcinoma(8th edition), the tumor was considered to be pStage IV (pT4bN2M1a[H3]). Following resection of the primary tumor, she received XELOX plus bevacizumab(Bev)therapy. After 5 courses, the tumors were markedly reduced in size. According to the RECIST criteria, the tumor response was determined to be a partial response(-44%). Therefore, on the basis of the morphologic response criteria, the patient had Group 1 disease. Because the chemotherapy seemed to be effective, we performed partial hepatectomies. Histologically, no cancer cells were detected in any of the resected tumors. After the partial hepatectomies, she received no additional chemotherapy. Her CEA levels decreased to a normal range and no tumor recurrence was detected over 2 and a half years. XELOX plus Bev therapy may be effective for unresectable multiple liver metastasis from rectal cancer.