This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Radiology
[{'content': 'The most likely cause of persistent snoring and mouth breathing in this child is:(AIIMS 2015) \nSelect and explain. \nA. Tonsillar enlargement, B. Adenoid enlargement, C. Croup, D. Paranasal sinus polyp', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B Adenoid enlargementLateral radiograph of neck shows soft tissue opacity in posterosuperior nasopharynx causing moderate narrowing of the nasopharyngeal airway. Similar appearance in adult is seen in nasopharyngeal neoplasms.', 'role': 'assistant'}]