This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
[{'content': 'Which of the following is not true about acute retropharyngeal absess: \nSelect and explain. \nA. Dysphagia, B. Swelling on posterolateral wall, C. Toicollis, D. Caries of cervical spine is usually a common cause', 'role': 'user'}, {'content': 'Answer: D \nExplanation: M/C cause acute retropharyngeal abscess in children is suppuration of retro pharyngeal lymphnodes secondary to infection of adenoids, nasopharynx and nasal cavity. The M/C cause of acute retropharyngeal abscess in adutls is penetrating injury of posterior pharyngeal wall or cerivcal esophagus.', 'role': 'assistant'}]