A 60-year-old female patient has been complaining of left earache of 3 months duration. One month ago a swelling appeared on the left side of the neck that progressively increased in size. 2 days ago she complained of change of her voice together with dysphagia. On indirect laryngoscopy, there was froth in the region behind the larynx.

What can be the probable diagnosis for this case? What further investigations would you suggest? *This case is from Docplexus editorial team for educative purpose only Source: Cases in ENT