Petrous Temporal Bone Cholesteatoma

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Introduction

Petrous temporal bone cholesteatoma is defined as cholesteatoma medial to the otic capsule or labyrinth. This can arise either as a result of a congenital anomaly or by medial spread of acquired middle ear disease. While this is a benign condition its proximity to important structures, namely the labyrinth, facial nerve, trigeminal ganglion, lower cranial nerves, internal carotid artery, jugular bulb, the dura and contents of the middle and posterior cranial fossae, results in it having the potential to cause significant morbidity. Indeed these lesions commonly present with invasion of the labyrinth and fallopian canal prior to diagnosis and the earliest symptoms are typically related to hearing, balance and the facial nerve.

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Read 1500 times Last modified on Thursday, 26 November 2015 16:07

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