Figure 1. Illustrations of therapeutic responses in representative cases.

(A) patient #6, multiple liver metastases. Although the tumor did not show a reduction in size, the sum of diameters of enhancement regions were reduced by more than 30%, according to the modified RECIST criteria; (B) patient #8, right upper lung nodular lesion (black arrow); (C) patient #9, right pleural seeding tumor (white arrow); (D) patient #19, bilateral multiple lung metastases; (E) patient #20, bilateral multiple lung metastases; (F) patient #13, peritoneal seeding in the right pelvic region from positron emission tomography-computed tomography scans before and after salvage metronomic chemotherapy.