Multimodality approach in evaluation of common crus aplasia

Sai Kiran Pendem, Rajeswaran Rangasami, S Sanjeev Mohanty, Prabhu Radhan Radhakrishnan

Indian Journal of Otology 2017 23(3):211-215

Common crus aplsia is a rare congenital anomaly caused due to abnormal reabsorption of neuroectodermal tissue of membranous common crus. Three patients came to the Department of Otorhinolaryngology with the complaints of poor response to sound. Audiometry examination revealed bilateral sensorineural hearing loss. They were referred to radiology department for high resolution computed tomography (HRCT) and magnetic resonance imaging (MRI) temporal bone as a part of preoperative cochlear implant work up. In the present study, we discuss the HRCT and MRI findings helpful in the diagnosis of this rare anomaly in three cases.

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