Rare diseases · Sign or symptom
Lingual thyroid
HP:0100029
What it means
An aberrant thyroid gland or Ectopic thyroid located at the base of the tongue, just posterior to the foramen cecum as a result of a failure of the thyroid to descend.
A lingual thyroid is the most common form of an aberrant thyroid gland.
Rare diseases that can present with this1
The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Tracking symptoms like this for someone? Eleplan keeps symptoms, diagnoses, medications and every specialist in one plan.
Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.