Phase II study evaluating safety of transoral surgery assisted by a flexible-tip rigid endoscope for T1/2 laryngopharyngeal cancer

Phase II study evaluating safety of transoral surgery assisted by a flexible-tip rigid endoscope for T1/2 laryngopharyngeal cancer - Phase II study evaluating safety of transoral surgery assisted by a flexible-tip rigid endoscope for T1/2 laryngopharyngeal cancer

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000019163

Enrollment

Registered

2015-10-01

Start date

2014-12-22

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

T1/2 laryngopharyngeal squamous cell carcinoma

Interventions

transoral surgery assisted by a flexible-tip rigid endoscope

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Squamous cell carcinoma is proven by histopathological examination. 2. Primary site is oropharynx, hypopharynx or larynx. 3. T stage is T1 or 2. It is determined by endoscope and image diagnosis(CT or MRI). 4. Tumor is lesser than a half-circle of pharynx. 5. Tumor does not invade nasopharynx, prevertebral fascia, mandible, prerigoid muscles, skull base or carotid artery. 6. Patients do not excluded by clinical N stage. 7. There is no distant metastasis. 8. Patients agree by signing on consent forms.

Exclusion criteria

Exclusion criteria: non

Design outcomes

Primary

Measure	Time frame
postoperative complication rate assessment day: postoperative day 30	—

Countries

Japan

Contacts

Public ContactNishikawa Daisuke

Aichi Cancer Center Central Hospital head and neck surgery

dsknishi@aichi-cc.jp052-761-6111

Outcome results

None listed

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