Glomus tympanicum paraganglioma
Pulsatile tinnitus and conductive hearing loss.
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Enhanced soft tissue mass, measuring 5×4mm, is seen lateral to the cochlear promontory at the right side. Eustachian tube, cochlea and semicircle canals are intact. Ossicles are not destroyed. Surrounding bony destruction is not seen. Jugular bulb is intact.