Keratoacanthoma

Definition/Description

Keratoacanthoma is a rapidly evolving skin lesion that resembles squamous cell carcinoma both clinically and histologically.

  • Images 
  • It usually occurs in sun-damaged skin and typically grows rapidly over 4-6 weeks to produce a dome shaped nodule with central ulceration or a keratin plug looking like a small volcano. 
  • Following this the lesion spontaneously resolves over 4-6 months.

Red Flag Symptoms

Difficult to distinguish clinically from squamous cell carcinomas.

Guidelines on Management

All need referral for excision to either Dermatology or Maxillofacial surgeons under the 2 week rule as cannot exclude an SCC clinically.

Referral Criteria/Information

Information to include in referral letter

  • Site and size of lesion
  • How long it has been present
  • Photographs are required
  • Relevant past medical/surgical history
  • Current regular medication
  • BMI/smoking status

Investigations prior to referral

  • None needed.

Additional Resources & Reference

Patient information leaflets/ PDAs

Patient information leaflet about keratoacanthoma from the British Association of Dermatologists: https://www.bad.org.uk/pils/keratoacanthoma

Excellent website with very good images: https://www.pcds.org.uk/clinical-guidance/keratoacanthoma

Associated Policies

There are no associated policies.

Specialties

Dermatology York

Places covered by

  • Vale of York

Hospital Trusts

  • York and Scarborough Teaching Hospitals