A Hard Pill to Swallow

Question:  A 52-year-old female is referred to your clinic for halitosis and dysphagia.  A colleague of yours examined her 6 months ago and did not find any abnormality on nasopharyngoscopy, and prescribed a PPI for suspected laryngopharyngeal reflux.  She reports no benefit with the new medication and is quite troubled by the sensation of food getting stuck in her throat and occasional regurgitation.  What is your leading diagnosis?  [Answer will be posted with next week's new question]

Answer to last week's question, Eponym Soup (Mar 23, 2015): 

Treacher-Collins Syndrome.  This syndrome is inherited in an autosomal dominant fashion with variable expressivity - often a clinician will note subtle manifestations in the patient's mother or father.