Peer Reviewed
Feature Article Dermatology

Melanoma: clinical features and early diagnostic techniques

Hugh Roberts, Martin I Haskett, John W Kelly
Abstract
GPs are at the front line in the diagnosis of melanoma and are often required to assess pigmented lesions to determine if further investigation is warranted. Here is a review of the clinical features of melanoma and new techniques that have been developed to aid diagnosis.
Key Points
  • Australia has the highest incidence of melanoma in the world, and GPs represent the front line of melanoma diagnosis.
  • Assessment of melanoma risk factors enables GPs to identify high risk individuals and implement appropriate melanoma prevention and surveillance strategies.
  • Dermoscopy and whole body photography add significant clinical information that may be used to identify new lesions or prevent unnecessary biopsy.
  • Excisional biopsy with 2 mm margins is the preferred method for further investigation of suspicious pigmented lesions.
  • Referral of patients to a multidisciplinary melanoma unit should be considered in complicated cases requiring specialist management.
  • Computer assisted diagnosis is a new frontier in melanoma diagnosis. At present, this technology should be viewed with caution as it cannot reliably diagnose up to 20% of melanomas.
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