A man in eastern China was shocked to discover dozens of tooth-like growths inside his throat after suffering from shortness of breath.
Doctors in Jiangsu Province found hard nodular objects in the shape of tiny teeth along the patient's airway during a check-up, reported the Daily Mail.
The condition, known as Tracheobroncheopathia Osteochondroplastica (TO), is extremely rare as there have been less than 400 cases reported worldwide.
According to Kan Kan News, Mr Zhang, who had been working away from home, started to have difficulties in breathing about half a year ago.
Dr Zhu Xiangping, from Jiangsu Subei People's Hospital, conducted a biopsy for Mr Zhang and found an accumulation of bony and cartilaginous nodules in his trachea.