Figure 4. This composite image presents the endoscopic findings from a patient with esophageal stenosis as a complication following the ingestion of a button battery. The battery ingestion led to a severe, benign-appearing intrinsic stenosis in the middle third of the esophagus, approximately 8 mm in diameter, which precluded the passage of an endoscope. Intervention with a through-the-scope (TTS) dilator and subsequent dilation using a 6-7-8 mm balloon (to a maximum balloon size of 8 mm) was executed, as evidenced by the sequence of images. The endoscopic images (1–8) chronologically document the appearance of the stenosis before and after dilation, providing a visual narrative of the therapeutic procedure and the esophagus’s condition.