onychoheterotopia

[AgneseFeresin]

Preferred term label: onychoheterotopia

Synonyms ectopic nail ; supernumerary fingernail

Definition (free text, please give PubMed ID) Onychoheterotopia is a rare condition characterized by the presence and development of a complete nail or part of it outside the ungual plate, generally in the finger. Its pathogenesis is unclear, it may be a congenital anomaly (ectopic germinal cells), part of the polydactyly spectrum, or secondary to trauma (traumatic inoculation of oncocytes). It may be resistant to surgical eradication, or managed through surgical resection.

Parent term (use hpo.jax.org/app) Abnormal nail morphology HP:0001597; Abnormal finger morphology HP:0001167

Diseases characterized by this term ? (e.g. Orphanet or OMIM number) 1 reported patient with Stankiewicz-Isidor syndrome (OMIM #617516) related to PSMD12 (OMIM *604450) PMID: 39641441

Your nano-attribution (ORCID)
https://orcid.org/0000-0002-4187-6282