Why is endosonography insufficient for residual diagnosis after neoadjuvant therapy for esophageal cancer? Solutions using muscle layer evaluation

Figure 5 Relationship between muscle layer defect angle measurements and clinicopathological factors. A: Pre-muscle layer defect angle (MDA) not correlated with preoperative treatment [neoadjuvant chemotherapy (NAC) vs chemoradiotherapy (CRT)]; B: Post-MDA not correlated with preoperative treatment (NAC vs CRT); C: MDA reduction rate not correlated with preoperative treatment (NAC vs CRT); D: Pre-MDA correlated with pT (pT0/1 vs pT2/3); E: Post-MDA correlated with pT (pT0/1 vs pT2/3); F: MDA reduction rate correlated with pT (pT0/1 vs pT2/3).