An 89-year-old woman, who had a medical history of dysphagia due to advanced Alzheimer's disease, was referred to the author's department with melena and anemia (hemoglobin level 5.7 g/dL). Forty-eight days previously, the patient underwent percutaneous endoscopic gastrostomy (PEG) using a bumper-button-type catheter (Ideal Button, Olympus, Tokyo, Japan). Emergency esophagogastroduodenoscopy (EGD) revealed an exposed vessel with active oozing at the site of contact with the internal PEG catheter bumper (Fig. 1A–C). Endoscopic ethanol injection was performed to control hemorrhaging, and a tube-type catheter (Neofeed Gastrostomy Tube, Top, Tokyo, Japan) was replaced with sufficient length for the prevention of contact rebleeding (Fig. 1D). In addition, parenteral nutrition and intravenous administration of a proton pump inhibitor (lansoprazole 30 mg twice-daily) were started. One week later, a follow-up EGD confirmed the disappearance of the exposed vessel (Fig. 2); thus, enteral nutrition was restarted.