With an increase in the incidence of superficial oro/hypo-pharyngeal cancer, it has become clear that metachronous cancer may also develop often in these cases, as in the case of superficial esophageal cancer. Patients with risk factors such as ALDH2 deficiency or a heavy drinking and/or smoking history require long-term follow-up for the detection of metachronous cancer. If the metachronous cancer is also of the superficial type, endoscopic treatment may be indicated. It is estimated that cases requiring multiple treatments will increase in the future. However, the oro/hypo-pharyngeal lumen is narrow and uneven. Endoscopic resection may become difficult due to scar formation from the previous treatment. In this situation, a safe and reliable resection method is required. We were able to safely perform complete en-bloc resection of the superficial cancer that developed in the scar from the previous operation, by endoscopic laryngo-pharyngeal surgery (ELPS) . ELPS is a safe and secure procedure for patients with postoperative scars.
