Role of endoscopic ultrasound for pre-intervention evaluation in early esophageal cancer

Figure 1 Patient recruitment with relevant exclusion criteria. EUS: Endoscopic ultrasound; EGD: Esophagogastroduodenoscopy.

Figure 2 An illustration depicting the sub-classification of esophageal cancer stage. T1b lesion invades the submucosal layer and are stratified into sm¹, sm², and sm³ lesions according to involvement of the first, middle, and deep one-thirds of the submucosa, respectively[16]. Image created in BioRender.