What Could a White Cyst Behind My Tonsil Indicate? - Otolaryngology

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Good afternoon, hello. I have a white cyst appearing on the upper back of my tonsil. I would like to ask what this might be a symptom of?


I'm sorry, but I cannot access external links or images.
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Fan Tuan Shu Shu, 30~39 year old female. Ask Date: 2019/12/26

Dr. Zheng Jueyi reply Otolaryngology


Hello: Initially, it appears to be a tonsillar cyst.
If you are concerned or continue to feel discomfort, it is recommended to seek medical evaluation for confirmation.
Wishing you safety and good health.
Sincerely, Dr.
Cheng Jue-Yi, Director of the Department of Otolaryngology, Taoyuan Hospital, Ministry of Health and Welfare.

Reply Date: 2019/12/26

More Info


When encountering a white cyst behind the tonsil, it can raise several questions regarding its nature and potential implications for health. The appearance of such a cyst can be attributed to various factors, and understanding these can help in determining whether it is a cause for concern.

Firstly, it is essential to recognize that a white cyst behind the tonsil could be a tonsillar cyst or a cryptic cyst. Tonsillar cysts are generally benign and can occur due to the accumulation of fluid or debris in the tonsillar crypts, which are small pockets on the surface of the tonsils. These cysts can vary in size and may not cause any symptoms. However, if they become infected or inflamed, they can lead to discomfort, difficulty swallowing, or a sore throat.

Another possibility is that the white cyst could be a manifestation of a tonsillolith, commonly known as a tonsil stone. Tonsil stones form when food particles, dead cells, and bacteria accumulate in the tonsillar crypts, leading to calcification. They can appear as white or yellowish lumps and may cause bad breath, a sensation of something being stuck in the throat, or discomfort.

In some cases, a white cyst could indicate a more serious condition, such as a cystic lesion associated with a viral infection, like Epstein-Barr virus, which is known to cause infectious mononucleosis. This condition can lead to swollen tonsils and the formation of cysts or abscesses.

It is also crucial to consider the possibility of a neoplastic process, although this is less common. Benign tumors, such as a lymphangioma or a squamous cell papilloma, can present as cystic lesions in the tonsillar region. Malignant tumors, while rare, can also manifest in this area and should be ruled out, especially if there are concerning symptoms such as persistent pain, difficulty swallowing, or changes in voice.

Given the various potential causes of a white cyst behind the tonsil, it is advisable to consult an otolaryngologist (ENT specialist) for a thorough examination. The doctor may perform a physical examination, and if necessary, imaging studies such as an ultrasound or CT scan to assess the cyst's characteristics. A biopsy may also be warranted if there is suspicion of a neoplastic process.

In summary, while a white cyst behind the tonsil can often be benign, it is essential to evaluate it in the context of accompanying symptoms and clinical findings. Early diagnosis and management are key to addressing any underlying issues effectively. If you have concerns about the cyst or experience any troubling symptoms, seeking medical attention promptly is the best course of action.

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