Neoplastic Process
trichilemmoma
Definitions related to trichilemmoma:
  • (tricholemmoma, benign) A benign hair follicle neoplasm in the outer hair sheath and infundibulum, characterized by central cells showing highly eosinophilic amorphous keratin.
    CDISC Terminology
    Clinical Data Interchange Standards Consortium (CDISC), 2021
  • A benign neoplasm arising from the outer hair sheath and infundibulum. It occurs in the head and neck, usually on the face. It usually presents as an exophytic wart-like lesion or a dome-shaped lesion with smooth surface. Multiple facial lesions are usually associated with Cowden disease.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • A benign tumour originating from the outer root sheath of the hair follicle.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2021
  • In 1962, Headington and French first described trichilemmoma as a benign neoplasm with differentiation toward pilosebaceous follicular epithelium, or outer root sheath. Though benign in nature, the significance of trichilemmoma resides in the association with Cowden disease (ie, multiple hamartoma syndrome) and the need to differentiate...
    Medscape
    WebMD, 2019
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