Curative endoscopic submucosal dissection for esophageal squamous cell carcinoma after chemoradiotherapy for pharyngeal cancer: A case report

Figure 5 Endoscopic submucosal dissection. A: Marking was performed around the lesion; B: No fibrosis was observed in the submucosal layer during endoscopic submucosal dissection; C: The lesion was completely resected without significant complications; D: Lugol's iodine staining of the lesion revealed to be removed en bloc; E: Pathological analysis revealed moderately differentiated squamous cell carcinoma and the invasion depth of the cancer was limited to lamina propria mucosa with negative vertical and horizontal margins, without lymphovascular invasion.