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the investigators randomly divide the eligible objects into two groups:1. objects in this group will first receive OE endoscopy observation and subsequent white light imaging(WLI) observation during oropharynx and hypopharynx; 2. objects in this group will first receive WLI observation and subsequent OE observation during oropharynx and hypopharynx. Then, the investigators will compare the detect rate of oropharyngeal and hypopharyngeal superficial squamous cell carcinoma of two groups to find if OE endoscopy can improve the detect rate of oropharyngeal and hypopharyngeal superficial squamous cell carcinoma in esophageal cancer patients.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| first OE | Experimental |
| |
| First WLI | Other |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| first OE | Device | optical enhancement(OE),a kind of electron straining endoscopy |
| |
| Measure | Description | Time Frame |
|---|---|---|
| detect rate | the detect rate of oropharyngeal and hypopharyngeal superficial squamous cell carcinoma | 12 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Qilu Hospital of Shandong University | Recruiting | Jinan | Shandong | China |
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| first WLI |
| Device |
the routine in the clinical practice |
|