<prompt> What will be the most likely diagnosis in a 70 year old male with hypo-aesthesia of external auditory meatus Histelbergs sign positive?MastoiditisBells palsyVestibular schwannomaMiddle ear cholesteatoma  <response>: Hitzelbergs sign refers to hypo-aesthesia of the posterosuperior aspect of the external meatus. It is due to involvement of nervus intermedius sensory root of VIIth nerve. 