<prompt> Phelps sign is seen in:Glomus jugulareVestibular SchawannomaManieres diseaseNeurofibromatosis  <response>: Phelps sign Phelp sign This sign is seen on CT scan In CT- in case of glomus jugulare tumor the normal crest between the carotid canal and jugulare tumor is absent whereas it is not so in case of glomus tympanicum 