Early esophageal carcinomas in achalasia patient after endoscopic submucosal dissection combined with peroral endoscopic myotomy: A case report

Figure 1 Computed tomography images. A and B: The chest computed tomography examination revealed evident dilatation of the esophagus proximal to the gastroesophageal junction.

Figure 2 The esophageal manometric view revealed the outflow obstruction of the gastroesophageal junction and the absence of peristalsis in the esophageal body.

Figure 3 The entrance was closed with titanium clips following the completion of hemostasis in the tunnel. A: The narrow-band image (NBI) shows brownish areas at 27-34 cm away from the incisor; B: The magnified NBI clearly shows the type B1 vessels; C and D: The extent of the lesions was determined using a dual knife; E: The resected lesion; F: Submucosal injection for the mucosal incision; G: Submucosal dissection and tunneling; H: Myotomy; I: Closure of the longitudinal mucosal incision with clips.

Figure 4 Pathological findings of a moderately differentiated squamous cell carcinoma located in the mucosa. A: × 100; B: × 200.