Usefulness of the Valsalva maneuver without a mouthpiece to observe the hypopharynx using transoral endoscopy

Yasushi Yamasaki, Ryu Ishihara, Kenta Hamada

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
Original languageEnglish
Pages (from-to)643-644
Number of pages2
JournalDigestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society
Issue number5
Publication statusPublished - Jul 2017
Externally publishedYes


  • Humans
  • Hypopharyngeal Neoplasms/diagnosis
  • Natural Orifice Endoscopic Surgery/methods
  • Valsalva Maneuver

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