Rare diseases · Sign or symptom
Dacryocystocele
HP:0030752
What it means
A nasolacrimal duct obstruction presenting as a grey-blue cystic swelling just below the medial canthus. Believed to be a result of concomitant upper obstruction of the Rosenmuller valve and lower obstruction of the Hasner valve.
Rare diseases that can present with this2
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: Timo cyst
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.