Establishment of acquired tracheoesophageal fistula using a modified magnetic compression technique in rabbits and its postmodeling evaluation

Figure 3 Endoscopic findings after modeling with the surgical modeling technique and modified magnetic compression technique. A: In the surgical modeling (SM) group, methylene blue was immediate injected into the esophagus, leading to overflow into the trachea (indicated by the arrow); B: 5 d after successful modeling with modified magnetic compression (MMC) technique, the fistula on the tracheal side was observed (indicated by the arrow); C: 5 d after successful modeling with MMC technique, the fistula on the esophageal side was observed (indicated by the arrow); D: 5 d after successful modeling with SM, the fistula and surrounding tracheal mucosa were observed (indicated by the arrow).