Neoplastic Process
pilomatrixoma
Subclass of:
Basal Cell Neoplasm
Definitions related to pilomatrixoma:
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(pilomatrixoma, benign) A benign hair follicle neoplasm in the outer hair sheath and infundibulum, characterized by abrupt keratinization and central lumen with ghost cells.CDISC TerminologyClinical Data Interchange Standards Consortium (CDISC), 2021
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(pilomatricoma) A benign adnexal neoplasm arising from hair-bearing skin surfaces, usually the head and neck and upper extremities. It usually presents as a solitary, slow-growing nodular mass. Morphologically, it displays differentiation towards the matrix and inner sheath of the normal hair follicle and the hair cortex. Complete surgical excision is usually curative. Occasionally, it may recur.NCI ThesaurusU.S. National Cancer Institute, 2021
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A tumor composed of cells resembling those of the hair matrix, which undergo 'mummification' and may calcify. It is a relatively uncommon tumor, which may occur at any age from infancy. The majority of patients are under 20, and females are affected more than males. The lesion is usually a solitary deep dermal or subcutaneous tumor 3-30 mm in diameter, situated in the head, neck, or upper extremity. (From Rook et al., Textbook of Dermatology, 4th ed, p2401)NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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Pilomatricoma is an asymptomatic slowly growing benign cutaneous tumor, differentiating towards the hair matrix of the hair follicle. It is covered by normal or hyperemic skin, and usually varies in size from 0.5 to 3 cm.Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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A pilomatrixoma is a benign appendageal tumor with differentiation toward hair cells. It usually manifests as a solitary, asymptomatic, firm nodule.WebMD, 2019
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Pilomatrixoma is a benign (non-cancerous) skin tumor of the hair follicle (structure in the skin that makes hair). They tend to develop in the head and neck area and are usually not associated with any other signs and symptoms (isolated). Rarely, pilomatrixomas can become cancerous (known as a pilomatrix carcinoma). Although they can...National Center for Advancing Translational Sciences
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