Bevacizumab maintenance in metastatic colorectal cancer: How long?

Figure 1 Thorax computed tomography-scan before starting chemotherapy (October 2008).

Figure 2 Thorax computed tomography-scan after 8 cycles of treatment. Note stabilization of the disease according to RECIST criteria (June 2009).

Figure 3 Thorax computed tomography-scan after two months of maintenance treatment. Note a partial regression of disease according to RECIST criteria (September 2009).

Figure 4 Thorax computed tomography-scan after 4 mo of maintenance treatment. The disease has completely regressed according to RECIST criteria (November 2009).

Figure 5 Thorax computed tomography-scan showing the complete response after discontinuing bevacizumab (January 2013).

Figure 6 CEA (ng/mL) and CA19. 9 (U/mL) serum levels throughout the treatment and follow-up period.

Figure 7 Thorax computed tomography-scan, showing the response at 60 mo since diagnosis (September 2013).