title: Retropharyngeal swelling of unexpected etiologies. Report of two cases.
mesh_terms: D000293:Adolescent; D000328:Adult; D002294:Carcinoma, Squamous Cell / Q000150:complications; D006222:Hamartoma / Q000150:complications; D006801:Humans; D008297:Male; D009303:Nasopharyngeal Neoplasms / Q000150:complications; D010608:Pharyngeal Diseases / Q000209:etiology*; D010610:Pharyngeal Neoplasms / Q000150:complications; D012186:Retroperitoneal Neoplasms / Q000150:complications