文摘
The introduction of monoclonal antibodies into the treatment protocols for metastatic colorectal cancer has significantly improved outcomes. Bevacizumab, a monoclonal antibody for VEGF, combined with chemotherapy improved survival in previously untreated metastatic colorectal cancer, but according to the results of previous clinical studies it is recommended to use bevacizumab in combination with other chemotherapy as either first- or second-line treatment. We herein report a case of a complete response for approximately 5?years after having received treatment consisting of FOLFIRI plus bevacizumab as third-line chemotherapy for unresectable liver metastases from ascending colon cancer. A 61-year-old female with uncontrollable high fever over 40?°C was treated as having advanced ascending colon cancer with multiple liver metastases. After resection of primary tumor, her high grade fever persisted, and contrast-enhanced computed tomography (CE-CT) examination revealed progression of the liver tumors in spite of mFOLFOX6 and FOLFIRI administration. After failure of these treatments, bevacizumab was supplemented with FOLFIRI regimen as third-line chemotherapy. Just after the first administration of bevacizumab, pyrexia dramatically disappeared and her appetite and activity improved. The tumor state was evaluated by repeated CE-CT and revealed multiple liver tumors reduced in size and reduced enhancement around the tumors. After 8 courses of this treatment, complete response was noted. A total of 58 courses were administered and then discontinued at the patient’s request. There has been no sign of recurrence to date, i.e., for approximately 5?years after administration of FOLFIRI plus bevacizumab regimen. According to our experience, bevacizumab might have the potential to control tumor progression of colon cancer even in third-line treatment. In the latest National Comprehensive Cancer Network guideline, anti-EGFR antibody treatment is described as one of the first-line treatments and the role of bevacizumab in the late phase as molecules target the therapeutic agent after anti-EGFR antibody failure might be important and should be reevaluated.