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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes One Mastoid Bone To Be Larger Than Other?

Is the size of your mastoid bone different in every individual purpose? My right mastoid bone is larger than my left. I had one ear infection when I was about 7, I am now 19. I don t have any ear drainage, swelling, none of that. However my right mastoid bone is larger than my left, and most people in my family don t have a prominent mastoid bone like I do.
Wed, 13 May 2015
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Sports Medicine Specialist,  's  Response
Hello,

Thank you for contacting me at "Ask a Doctor". I will try to answer your question to the best of my ability.

This is absolutely nothing to worry about. It is relatively common to have some discrepancies in various parts of the body. Some people have one leg longer than the other, some people have one shoulder higher than the other, et cetera. Having one mastoid bone slightly larger than the other is relatively common. Nothing to worry about. I would ignore it is much as possible.

I hope this information is useful for you. Please do not hesitate to message us back if you have any further questions.

Best wishes,

Adrian Rawlinson MD
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What Causes One Mastoid Bone To Be Larger Than Other?

Hello, Thank you for contacting me at Ask a Doctor . I will try to answer your question to the best of my ability. This is absolutely nothing to worry about. It is relatively common to have some discrepancies in various parts of the body. Some people have one leg longer than the other, some people have one shoulder higher than the other, et cetera. Having one mastoid bone slightly larger than the other is relatively common. Nothing to worry about. I would ignore it is much as possible. I hope this information is useful for you. Please do not hesitate to message us back if you have any further questions. Best wishes, Adrian Rawlinson MD