Rare diseases · Sign or symptom
Microtia, second degree
HP:0008569
What it means
Median longitudinal length of the ear more than two standard deviations below the mean in the presence of some, but not all, parts of the normal ear.
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
Also called: Cockleshell ear · Constricted helix type IV · Ear, grade II dysplasia · Mini ear · Severe cupped ear, type III · Shell ear · Snail ear
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.