<prompt> The most likely cause of persistent snoring and mouth breathing in this child is:AIIMS 2015Tonsillar enlargementAdenoid enlargementCroupParanasal sinus polyp  <response>: 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. 