Abnormal Opening in Hypopharynx by Screening Upper Endoscopy

• Keun Sol Min,
• Jung-Hwan Oh

Affiliations

Keun Sol Min

Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea

Jung-Hwan Oh

Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea