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Related Experiment Videos

Screening for malignant melanoma using instant photography.

P C Edmondson1, R K Curley, R A Marsden

  • 1BUPA Health Screening Centre, London, UK.

Journal of Medical Screening
|May 13, 1999
PubMed
Summary

Instant photography aids in screening for malignant melanoma by helping differentiate benign from potentially cancerous lesions. While not a sole diagnostic tool, it reduces unnecessary specialist referrals and empowers patients in monitoring skin changes.

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Area of Science:

  • Dermatology
  • Medical Imaging
  • Public Health Screening

Background:

  • Malignant melanoma screening during routine health examinations is crucial for early detection and improved prognosis.
  • Clinical grading systems, like the revised seven-point checklist, have limitations in accurately identifying suspicious pigmented skin lesions.

Purpose of the Study:

  • To evaluate the efficacy of instant photography, alongside clinical assessment, in screening for malignant melanoma.
  • To determine if photography can improve the accuracy and efficiency of melanoma detection in a primary care setting.

Main Methods:

  • A health screening clinic evaluated 39,922 patients over 45 months.
  • Suspicious lesions were clinically assessed using the revised seven-point checklist, then photographed using a Polaroid camera.

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  • Photographs were independently graded by consultant dermatologists, and patients received copies for self-monitoring.

    • Main Results:

    • Fourteen malignant melanomas were diagnosed among 1052 assessed lesions.
    • Clinical grading by non-dermatologists yielded a high rate of false positives.
    • Photography successfully identified 11 melanomas and differentiated many benign lesions, reducing referral needs.

    Conclusions:

    • Clinical grading alone using the checklist was disappointing due to numerous false positives.
    • Instant photography proved effective in identifying melanomas and filtering benign lesions, reducing specialist referrals.
    • Sole reliance on photographic grading is cautioned against due to missed diagnoses; patient-held photographs aided diagnosis in two cases, warranting further study.