Congenital Anomaly of Stapes and Abnormal Pathway of Facial Nerve: A Case Report

Congenital stapedial absence is a rare condition and may or may not associated with middle and/or external ear anomaly. Facial nerve anomaly can be associated with stapedial deformity or agenesis. This is a case of a patient with history of bilateral hard of hearing, vertigo(on/off) who visited ENT outdoor, Patient was already using hearing aid, Pure tone audiogram shows bilateral conductive hearing loss of 60 dB on right side and 66 dB on left side. On exploratory tympanotomy facial nerve was found on oor of medial wall of middle ear, stapes was not visible, facial nerve conrmed by using nerve monitor. Intra operative nerve monitoring is a useful tool for nerve identication.