The patient was a 48-year-old woman with a retropharyngeal abscess. She had a sore throat after digesting a fish. No fishbone was detected at the first hospital she visited, therefore, she was treated with antibiotics and steroids until one was observed by CT scan. Eight days later, she was referred to our hospital. The fishbone was removed orally from the posterior pharyngeal wall under a general anesthesia. Three days after the operation, she had a fever and a non-productive cough. CT scan revealed a retropharyngeal abscess and drainage was performed. The abscess subsided and she was discharged 10 days later.