Synonym(s)
Pilar sheath acanthoma; Vellushair-Hamartoma congenital
HistoryThis section has been translated automatically.
Brownstein and Mehregan, 1978
DefinitionThis section has been translated automatically.
Rare benign adnexal tumor with hair follicle differentiation which is classified between giant pore and trichofolliculoma.
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ManifestationThis section has been translated automatically.
Occurring in middle to old age. No gender preference.
LocalizationThis section has been translated automatically.
Head and neck region especially upper lip, forehead.
Clinical featuresThis section has been translated automatically.
Uncharacteristic picture; usually solitary, about 0.5-1.0 cm in size, skin-coloured, firm papules that slide over the base and usually have a small central porus.
HistologyThis section has been translated automatically.
Dermally localized follicular-cystic tumor extending into the subcutis, the wall of which consists of multi-layered cornified squamous epithelium. Starting from this, thin strands of epithelium extend into the surrounding connective tissue. Central loose layered corneal material. Included in the epithelial and cystic parts are small horn beads and also sebaceous gland lobules.
TherapyThis section has been translated automatically.
In general, this is a random histological finding. Excision in toto should be ensured.
LiteratureThis section has been translated automatically.
- Bhawan J (1979) Pilar sheat acanthoma. A new benign follicular tumor. J Cutan Pathol 6: 438-440
- Folpe AL et al (2003) Proliferating trichilemmal tumors: clinicopathologic evaluation is a guide to biological behavior. J Cutan Pathol 30: 492-398
- Mehregan AH, Brownstein MH (1978) Pilar sheat acanthoma. Arch Dermatol 114: 1495 -1497
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Vellus hair hamartoma, congenital;Disclaimer
Please ask your physician for a reliable diagnosis. This website is only meant as a reference.
Prof. Dr. med. Peter Altmeyer