Sublingual Salivary Gland Variations: Is Asymmetry Normal?

Sublingual salivary gland duct opening

1.
Is it normal for the openings of the submandibular salivary glands on both sides of the tongue to be different in size? I have observed for a month and noticed that the protrusion on the right side is slightly larger, but it hasn't changed in size during this month.
Should both sides be the same size?
2.
The larger area on the right side has several red capillaries (which I have also observed for a month, and they haven't changed).
Is this asymmetry between the two sides normal and not indicative of any pathology? Thank you, doctor.

Kiki, 30~39 year old female. Ask Date: 2023/09/25

Dr. Zheng Jueyi reply Otolaryngology

Hello, if there are no obvious symptoms such as pain, redness, or swelling, slight variations in the openings of the submandibular salivary glands are normal and can be monitored on your own.
If you are concerned, you may visit an otolaryngology clinic for examination and confirmation.

Reply Date: 2023/09/25

More Info

When it comes to the anatomy and function of the sublingual salivary glands, variations in size and appearance between the left and right sides are generally considered normal. The sublingual glands, located beneath the tongue, can exhibit asymmetry in their openings and the size of the glandular tissue. This asymmetry can be attributed to several factors, including individual anatomical differences, variations in gland development, and even the presence of minor vascular structures.

1. Asymmetry in Sublingual Salivary Gland Openings: It is not uncommon for the openings of the sublingual salivary glands to differ in size. Each person's anatomy is unique, and slight variations in the size of glandular tissue or the ducts that lead to the oral cavity can occur. If you have observed that the right side appears larger than the left but has remained stable over the past month, this is likely a benign anatomical variation. It is important to note that significant changes in size or appearance over a short period may warrant further evaluation, but stable asymmetry is typically not a cause for concern.

2. Presence of Red Vessels: The observation of red microvessels in the area of the larger gland can also be a normal finding. These vessels are likely superficial blood vessels that may become more prominent due to various benign factors, such as increased blood flow or local inflammation. If they have not changed in size or appearance over the month, it is less likely that they indicate a pathological condition. However, if there are accompanying symptoms such as pain, swelling, or changes in the texture of the tissue, it would be advisable to consult a healthcare professional for a thorough examination.

In summary, variations in the size of the sublingual salivary glands and the appearance of associated blood vessels can be normal anatomical features. However, if you have any concerns or if there are changes in symptoms, it is always best to seek a professional opinion. Regular monitoring of any changes in your oral cavity is a good practice, and if anything unusual arises, do not hesitate to consult with a healthcare provider. They can perform a clinical examination and, if necessary, imaging studies to rule out any underlying conditions.

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