Tracheobronchial foreign body aspiration can cause serious health problems in individuals of all age groups and requires immediate diagnosis and intervention. Patients with psychiatric disorders can aspirate foreign objects that may pose a danger to their health. Herein, we report on a case of curtain clip aspiration in a 44-year-old man with mental retardation. Chest radiography and bronchoscopy showed a sharp, pointed, S-shaped curtain clip inversely lodged in his left main bronchus. The curtain clip was removed successfully using flexible bronchoscopy, and no complications were noted.

Introduction
 Case report
 Discussion
 References

• Ho Sung Lee(Department of Internal Medicine, Chonnam National University Hospital)
• Sun Min Kim(Department of Internal Medicine, Chonnam National University Hospital)
• Hyukjin Park(Department of Internal Medicine, Chonnam National University Hospital)
• Tae Ryom Oh(Department of Internal Medicine, Chonnam National University Hospital)
• Joon Jin(Department of Internal Medicine, Chonnam National University Hospital)
• Jung Ho Choi(Department of Internal Medicine, Chonnam National University Hospital)
• Yong-Soo Kwon(Department of Internal Medicine, Chonnam National University Hospital) Corresponding author