ArticleEsophagus : official journal of the Japan Esophageal Society2020
Utility of Valsalva maneuver in the endoscopic pharyngeal observation.
Article in Esophagus : official journal of the Japan Esophageal Society, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 9 citations in OpenAlex.
- Improved hypopharyngeal visibility and early cancer detection using the modified Killian method during esophagogastroduodenoscopy in patients at high risk of head and neck cancer.Esophagus : official journal of the Japan Esophageal Society · 2026Article
- Comprehensive Endoscopic Management of Superficial Pharyngeal Cancer - From Detection and Diagnosis to Treatment and Surveillance.DEN open · 2026Review
- Image-enhanced endoscopy in upper GI tract: State-of-the-art review.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2025Review
- [The modified Valsalva maneuver in hypopharynx CT scan].Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery · 2023Article
- Comprehensive risk evaluation for metachronous carcinogenesis after endoscopic submucosal dissection of superficial pharyngeal squamous cell carcinoma.Esophagus : official journal of the Japan Esophageal Society · 2022Article
- Metachronous carcinogenesis of superficial esophagus squamous cell carcinoma after endoscopic submucosal dissection: incidence and risk stratification during long-term observation.Esophagus : official journal of the Japan Esophageal Society · 2021Article
- Shielding method for the endoscopic procedures during the COVID-19 pandemic.Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society · 2020Review
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMetachronous cancer rate in the pharynx is high before and after the treatment of esophageal cancer. Endoscopic observation is difficult in the pharynx especially in the postcricoid area. Pharyngeal cancer in the postcricoid area has been often found in advanced stage. Valsalva maneuver has been reported to improve the visibility.
methodsFrom May 2017 we introduced a dedicated mouthpiece to conduct Valsalva maneuver. One hundred consecutive patients who had been observed throughout the pharynx by one endoscopist were enrolled. A total of 200 image files before and after introduction were made and reviewed by three endoscopists. We retrospectively evaluated the utility and safety of Valsalva maneuver.
resultsThe visibility before introduction was Good in three cases, Moderate in 12 cases and Poor in 85 cases. Meanwhile, the visibility after introduction was Good in 58 cases, Moderate in 23 cases, and Poor in 19 cases (P < 0.05). Nine lesions including hypopharyngeal cancer were found and adverse events were not observed in this study.
conclusionThe Valsalva maneuver was considered to be a safe and effective method in endoscopic observation of the pharynx.
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