Aberrant Jugular Bulb Presenting as a Middle Ear Mass

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Abstract
Case reports of 3 patients seen with a bluish mass behind the tympanic membrane are presented. The initial diagnosis was probable glomus tumor. In 1 patient, middle ear exploration confirmed the presence of a high-lying jugular bulb. In the other 2, venography demonstrated that the jugular bulb projected superiorly into the middle ear cavity. In all 3, polytomography demonstrated a dehiscence of the bony septum which normally separates the jugular bulb from the hypotympanum. When a bony dehiscence is seen in the absence of destructive changes, a diagnosis of aberrant jugular bulb is strongly suggested.

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