Rare diseases · Sign or symptom
Mucinous histiocytosis
HP:0040138
What it means
Multiple subcutaneous non-fragile and skin-coloured papules characterized by interstitial infiltrate of spindle and epithelioid histiocytes, and mucin. There are well circumscribed aggregates of epithelioid histiocytes and mucin in the upper and middle dermis,with the histiocytes arranged between collagen bundles and separated from the epidermis by a Grenz zone.
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: Histiocytosis, mucinous
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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.