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CT Scan or Tympanogram for Otosclerosis?

QUESTION: Would a tympanogram always reveal if someone has otosclerosis? Or is a CT scan a more conclusive way to determine if someone has otosclerosis? Would you recommend a CT Scan or Tympanogram for Otosclerosis diagnosis?

ANSWER: Although not mandatory, a CT scan done properly will reveal evidence of otosclerosis in the majority of cases.  A tympanogram is far less specific.

Thanks for your question!

Neil Sperling, MD

NYOG proudly announces the publication a new textbook co-edited by Dr. Neil Sperling.

Available from Plural Publishers in January 2014

 Otosclerosis book

Otosclerosis
by De Souza, Goycoolea & Sperling

Frequently Asked Questions

A tympanogram is not always effective in detecting otosclerosis because it is far less specific for this condition. While it may provide some information about middle ear function, it does not reliably reveal otosclerosis.

Yes, when performed properly, a CT scan is more conclusive and can reveal evidence of otosclerosis in the majority of cases. It offers detailed imaging of the ear structures, making it a preferred diagnostic tool for confirming otosclerosis.

For diagnosing otosclerosis, a properly done CT scan is generally recommended due to its higher specificity in revealing evidence of the condition. Tympanograms are less specific and may not reliably detect otosclerosis.

While a properly performed CT scan reveals evidence of otosclerosis in most cases, it is not mandatory and may occasionally miss subtle cases. However, it remains the most effective imaging method available for detection.

Tympanometry assesses middle ear function but is not specific enough to reliably detect otosclerosis. It can be part of a broader assessment but is not sufficient on its own for diagnosis.

Dr Robert Pincus

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