Fig. 2

Measuring changes in tumor size using the shortest and longest diameters, depending on tumor location. The longest diameter is the maximum distance between the outer tumor margins (dotted arrow). The shorter axis is the distance between the inner and outer tumor margins; it represents the tumor thickness (solid arrow). Each measurement was performed in the same horizontal slice and the same direction before and after neoadjuvant chemotherapy. NAC, neoadjuvant chemotherapy; CT, computed tomography