Source:http://linkedlifedata.com/resource/umls/id/C0474820
MSH: A rare PARAGANGLIOMA involving the GLOMUS TYMPANICUM, a collection of chemoreceptor tissue adjacent to the TYMPANIC CAVITY. It can cause TINNITUS and conductive hearing loss (HEARING LOSS, CONDUCTIVE).,NCI: A benign or malignant middle ear paraganglioma arising from paraganglia around the tympanum. Signs and symptoms include a mass behind the tympanum, tinnitus, and conductive hearing loss.