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Related Experiment Video

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Dissection of the Auditory Bulla in Postnatal Mice: Isolation of the Middle Ear Bones and Histological Analysis

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Published on: January 4, 2017

Large jugular bulb abnormalities involving the middle ear.

Maggie A Kuhn¹, David R Friedmann, Leon S Winata

¹Department of Otolaryngology, New York University School of Medicine, New York, New York, USA.

Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [And] European Academy of Otology and Neurotology

|July 10, 2012

Summary

Jugular bulb abnormalities involving the middle ear (JBME) are rare, affecting 1.1% of temporal bones. These abnormalities may grow over time and are linked to contralateral transverse sinus issues.

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Area of Science:

Otolaryngology
Head and Neck Surgery
Radiology

Background:

Jugular bulb abnormalities (JBA), including jugular bulb diverticula (JBD) and large jugular bulbs, are uncommon findings in the middle ear.
Understanding the prevalence and characteristics of JB abnormalities involving the middle ear (JBME) is crucial for diagnosis and management.

Purpose of the Study:

To determine the prevalence of JBME in a large series of temporal bone histopathologic specimens.
To analyze the clinical and radiographic features of JBME and elucidate their probable developmental mechanisms.

Main Methods:

Histopathologic review of 1,579 unique temporal bone specimens.
Clinical and radiographic review of patients with diagnosed JBME.
Analysis of shared characteristics, treatments, and outcomes of JBME cases.

Main Results:

JBME was identified in 1.1% (17/1,579) of temporal bone specimens, with most involving the inferior mesotympanum.
Four additional clinical cases of large JBME were observed, presenting with conductive hearing loss, ear canal mass, or intraoperative bleeding.
Radiographic findings included multiple jugular bulb diverticula and, in some cases, serial growth. Hypoplastic contralateral transverse sinus was noted in all imaged patients.

Conclusions:

JBME is a rare condition occurring across various age groups.
JBME may exhibit growth over time and is often associated with multiple diverticula within the same jugular bulb.
Contralateral transverse sinus outflow obstruction is suggested as a cause for the development and aggressive behavior of JBME.