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Dilated poreD23.L

Author:Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

giant pore

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HistoryThis section has been translated automatically.

Winer, 1954

DefinitionThis section has been translated automatically.

Benign neoplasia of the outer hair root sheath (infundibular horny cyst). S.a. Adnexal tumours with hair follicle differentiation.

EtiopathogenesisThis section has been translated automatically.

Controversial entity; minus variant of a naevus comedonicus? Misinterpreted "banal" giant comedo.

ManifestationThis section has been translated automatically.

6th to 7th decade of life.

LocalizationThis section has been translated automatically.

Especially face, neck, shoulder girdle.

Clinical featuresThis section has been translated automatically.

Wide pore with comedone clot-like content, especially in actinically damaged skin, but also in places which are intensively anchored to their underlay due to topographical peculiarities (e.g. skin over the spine, neck).

HistologyThis section has been translated automatically.

Exit from a sebaceous gland follicle, papillomatous wall structure, melanin pigmentation, retarded horny cell masses, which can reach into the subcutis. The surrounding connective tissue shows actinic elastosis, depending on its localization.

Differential diagnosisThis section has been translated automatically.

scar (see Cicatrix); comedo; giant comedones.

TherapyThis section has been translated automatically.

In case of cosmetic disorder excision.

LiteratureThis section has been translated automatically.

  1. Morikawa T et al (2003) Dilated pore: a case report and an immunohistochemical study of cytokeratin expression. J Dermatol 30: 556-558
  2. Resnik KS et al (1993) Dilated pore nevus. A histologic variant of nevus comedonicus. At J Dermatopathol 15: 169-171
  3. Steffen C (2001) Winer's dilated pore: the infundibuloma. At J Dermatopathol 23: 246-253
  4. Winer L (1954) The dilated pore, a trichoepithelioma. J Invest Dermatol 23: 181

Authors

Last updated on: 29.10.2020

Author: Prof. Dr. med. Peter Altmeyer