Symmetrical Bony Structures Near the Adam's Apple - Otolaryngology

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Thyroid cartilage on both sides?


Hello doctor, I have noticed two symmetrical, round, bone-like structures on both sides of my Adam's apple.
They are of the same size, have a smooth surface, and move up and down when I swallow.
There are no other symptoms.
Could you please tell me if these are normal bones? I have researched the anatomy of the Adam's apple, trachea, and laryngeal cartilages, but I couldn't find anything similar to these round structures.
I had a neck ultrasound at the end of March this year, and I think I felt them then, but the doctor did not mention any need for treatment.

Fei Man, 20~29 year old female. Ask Date: 2018/09/21

Dr. Zheng Jueyi reply Otolaryngology


Hello: Your question is answered as follows: The tympanic membrane is symmetrical and shows no obvious discomfort, which is mostly a normal structure.
If you have concerns, you may visit a clinic for confirmation.
Wishing you peace, health, and well-being.
Sincerely, Dr.
Cheng Jue-Yi, Director of the Department of Otolaryngology, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2018/09/21

More Info


Hello! It sounds like you have some concerns regarding the symmetrical bony structures you’ve noticed near your Adam's apple. Based on your description, it seems that you are feeling two round, smooth structures on either side of your larynx that move when you swallow, and you have no associated symptoms such as pain or discomfort.

Firstly, it’s important to understand the anatomy of the neck in that region. The Adam's apple, or laryngeal prominence, is primarily formed by the thyroid cartilage, which is a part of the larynx. The thyroid cartilage is typically more prominent in males than in females, and it can be felt as a hard structure in the midline of the neck.
The structures you are feeling on either side of the Adam's apple could potentially be the thyroid cartilage itself, or they might be other anatomical features such as the cricoid cartilage or even the hyoid bone, which is located above the larynx. The hyoid bone is unique in that it is not directly attached to other bones but is anchored by muscles and ligaments. It is shaped somewhat like a horseshoe and can be palpated in the neck.

Another possibility is that you are feeling the thyroid gland, which is located just below the Adam's apple and can sometimes be palpable, especially if it is enlarged. The thyroid gland is butterfly-shaped and sits on either side of the trachea. However, if you are feeling distinctly bony structures, it is less likely to be the thyroid gland itself, as it is more soft and glandular in texture.

Given that you had a neck ultrasound in March and the physician did not express any concerns, it is likely that what you are feeling is normal anatomical variation. However, if these structures have changed in size, shape, or if you start experiencing any symptoms such as pain, difficulty swallowing, or changes in voice, it would be prudent to follow up with your healthcare provider for further evaluation.

In summary, while it is difficult to provide a definitive answer without a physical examination, the symmetrical, round, smooth structures you are feeling could be normal anatomical features related to the thyroid or laryngeal cartilages. If you have any ongoing concerns, it is always best to consult with a healthcare professional who can perform a thorough examination and provide personalized advice. Remember, your health and peace of mind are important, so don’t hesitate to seek further clarification if needed.

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