Case of a Superficial Hypopharyngeal Cancer at the Pharyngoesophageal Junction Which Is Detected by Transnasal Endoscopy Using Trumpet Maneuver

1. ¹ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
2. ² Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
3. ³ Department of Otorhinolaryngology, Tokyo Medical and Dental University, Tokyo, Japan
4. ⁴ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
5. ⁵ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
6. ⁶ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
7. ⁷ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
8. ⁸ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
9. ⁹ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
10. ¹⁰ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
11. ¹¹ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
12. ¹² Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
13. ¹³ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
14. ¹⁴ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
15. ¹⁵ Department of Esophageal and General Surgery, Tokyo Medical and Dental University, Tokyo, Japan
16. ¹⁶ Department of Human Pathology, Tokyo Medical and Dental University, Tokyo, Japan