Usability of an ultra-thin endoscopy for diagnosing pharyngeal and esophageal cancer

Usability of an ultra-thin endoscopy for diagnosing superficial squamous neoplasms in the pharynx and esophagus : a prospective trial - Diagnosis of superficial squamous neoplasms in the pharynx and esophagus using an ultra-thin endoscope

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000042428

Enrollment

Registered

2020-11-12

Start date

2020-10-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

superficial squamous neoplasms in the pharynx and esophagus

Interventions

Two endoscopes will be used in this study (GIF-1200N and GIF-EZ1500 or GIF-XZ1200, Olympus).

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. The patients with present history of superficial pharyngeal or esophageal neoplasia 2. The patients who agree with the informed consent

Exclusion criteria

Exclusion criteria: 1.A Patient aged < 20 2. A patient who is pregnant 3.The patients who have history of radiotherapy and the lesion is located at the irradiation field 4.The patients who take antithrombotic drug 5.The patients who are evaluated inappropriate for the research

Design outcomes

Primary

Measure	Time frame
Rate of concordance in diagnosing superficial pharyngeal or esophageal cancer using an ultra-thin endoscopy and magnified endoscopy	—

Secondary

Measure	Time frame
1. Inter- and intra-observer agreement for diagnosing superficial pharyngeal and esophageal cancer 2. Diagnostic accuracy of an ultra-thin endoscopy and magnified endoscopy for superficial pharyngeal or esophageal cancer 3. Comparison of visibility for superficial pharyngeal and esophageal cancer using an ultra-thin endoscopy and magnified endoscopy 4. Characteristics of undetectable superficial pharyngeal or esophageal cancer using ultra-thin endoscopy	—

Measure

Time frame

1. Inter- and intra-observer agreement for diagnosing superficial pharyngeal and esophageal cancer 2. Diagnostic accuracy of an ultra-thin endoscopy and magnified endoscopy for superficial pharyngeal or esophageal cancer 3. Comparison of visibility for superficial pharyngeal and esophageal cancer using an ultra-thin endoscopy and magnified endoscopy 4. Characteristics of undetectable superficial pharyngeal or esophageal cancer using ultra-thin endoscopy

—

Countries

Japan

Contacts

Public ContactAkira Dobashi

The Jikei University School of Medicine Department of Endoscopy

ad99061@jikei.ac.jp03-3433-1111

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026