Which cyst is typically found at the base of the tongue and can be 1-4 cm in size?

The thyroglossal tract cyst is a remnant of the thyroglossal duct, which is involved in the descent of the thyroid gland during development. These cysts are typically located at the midline of the neck, but they can occasionally be found at the base of the tongue, especially in cases where they have not migrated fully during embryonic development. The size of these cysts can range from 1 to 4 cm, making them noticeable in clinical examinations.

This cyst is often asymptomatic, but it may become infected or inflamed, which can lead to swelling and discomfort. Diagnosis is usually confirmed through imaging techniques or excision, where the cyst can be examined histologically. In contrast, the other types of cysts listed are associated with different anatomical locations and developmental processes, which do not typically correlate with the base of the tongue or the specified size range.