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trichilemmoma

Thursday 3 January 2013

tricholemmoma

WKP

Definition: Trichilemmoma is a cutaneous benign adnexal tumors that differentiates toward cells of the outer root sheath. The lesion is often seen in the face and neck region.

Multifocal occurrence is associated with Cowden syndrome, patients with which exhibit hamartomatous intestinal polyposis as well as tricholemmoma.

Synopsis

- outer root sheath differentiation

Images

- https://twitter.com/VishwasParekh/status/709900242511122434
- trichilemmoma arising in nevus sebaceus

Differential diagnosis

- clear cell acanthoma
- trichilemmal carcinoma
- trichilemmal horn

Predisposition

- Cowden disease

See also

- cutaneous tumors

  • cutaneous adnexal tumors
    • cutaneous follicular tumors