Question:  A 44 year old police officer is referred to you for the chief complaint of anosmia.  During an altercation with a perpetrator, he was struck in the back of the head with a wooden board and thinks he lost his sense of smell at that time.  Head imaging is negative for skull base trauma.  On examination you observe clear nasal mucus with nonhypertrophied turbinates.  What is the likelihood that his sense of smell will return to normal levels?  [Answer will be posted with next week's new question]

Answer to last week's question, "Eyes on Ions" (November 21, 2016):

Pendred syndrome; autosomal recessive.  The title of the post relates to the mutant pendrin anion transporter encoded by SLC26A4.