Objective tinnitus

Objective tinnitus is seen in all of the following except: 

A. Palatal myoclonus 
B. Glomus Jugulare Tumour 
C. Otoscierosis 
D. Patulous Eustachian tube

Ans. C. Objective tinnitus refers to the tinnitus which is audible to the physician or another person. It may be pulsatile or nonpulsatile. Palatal myoclonus is rhythmic contraction of soft palate muscles. The diagnosis is established by flexible nasopharyngoscopy. Vascular abnormalities like glomus tumour, arteriovenous malformations, venous hums causes pulsatile tinnitus. Otosclerosis is not a cause of objective tinnitus.