CC BY 4.0 · Endosc Int Open 2024; 12(04): E621-E628
DOI: 10.1055/a-2284-9184
Original article

Efficacy and safety of the water pressure method for endoscopic submucosal dissection in superficial pharyngeal cancer

1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
2   Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Shinjuku-ku, Japan
,
Kentaro Iwata
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
3   Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Kurato Miyazaki
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
3   Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Yoko Kubosawa
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
3   Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Mari Mizutani
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
3   Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Yukie Hayashi
3   Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Motoki Sasaki
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Tomohisa Sujino
2   Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Shinjuku-ku, Japan
,
Kaoru Takabayashi
2   Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine, Shinjuku-ku, Japan
,
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Yusaku Takatori
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Atsushi Nakayama
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Mariko Sekimizu
4   Department of Otolaryngology, Head and Neck Surgery, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Hiroyuki Ozawa
4   Department of Otolaryngology, Head and Neck Surgery, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
,
Naohisa Yahagi
1   Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine, Shinjuku-ku, Japan (Ringgold ID: RIN38084)
› Author Affiliations

Abstract

Background and study aims Superficial pharyngeal cancers can be cured with transoral surgery (TOS), which preserves organ function and quality of life. Pharyngeal endoscopic submucosal dissection (ESD) is challenging to perform because of limited maneuverability and complex anatomical features. The water pressure method (WPM) is useful for natural traction techniques during ESD and is potentially useful for pharyngeal ESD. This study aimed to investigate the short-term outcomes of WPM-ESD for pharyngeal lesions.

Patients and methods Therapeutic outcomes of patients who underwent WPM-ESD for pharyngeal lesions at Keio University between May 2019 and February 2022 were retrospectively analyzed.

Results Twenty-one pharyngeal lesions treated with WPM-ESD were analyzed. Three lesions were located in the oropharynx and 18 in the hypopharynx. All ESD procedures were performed under general anesthesia. The endoscopic en bloc resection rate was 100%. The median procedure time was 15 minutes (range 4–45 minutes). All patients were successfully extubated on the day of ESD. No serious adverse events (AEs) related to WPM-ESDs were observed. None of the patients required nasogastric intubation, percutaneous endoscopic gastrostomy, or tracheotomy. The median fasting time and hospital stay were 2 days (range 2–5 days) and 6 days (range 6–10 days), respectively. All the histological results indicated squamous cell carcinoma. The complete histologic resection rate was 76.2%.

Conclusions WPM-ESD achieved a high en bloc resection rate and short procedure time without serious AEs. Thus, it may be a useful treatment for pharyngeal lesions.



Publication History

Received: 13 August 2023

Accepted after revision: 04 March 2024

Accepted Manuscript online:
11 March 2024

Article published online:
26 April 2024

© 2024. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/).

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