| ICD9 = | DiseasesDB = 29289 | OMIM = 166800 | eMedicineSubj = article | eMedicineTopic = 994891 | eMedicine_mult = | }} Otosclerosis's an abnormal growth of bone of the middle ear which can result in hearing loss. Clinical description Chronic conductive hearing loss (CHL)'s the finding in almost all cases of otosclerosis (in fact, if one has sensorineural hearing loss, they'll most likely never be diagnosed with otosclerosis). This usually will begin in one ear but will eventually affect both… (More on Otosclerosis)