Teaching dermatoscopy of pigmented skin tumours to novices: Comparison of analytic vs. heuristic approach

P. Tschandl, H. Kittler, K. Schmid, I. Zalaudek, G. Argenziano

Research output: Contribution to journalArticlepeer-review

Abstract

Background There are two strategies to approach the dermatoscopic diagnosis of pigmented skin tumours, namely the verbal-based analytic and the more visual-global heuristic method. It is not known if one or the other is more efficient in teaching dermatoscopy. Objective To compare two teaching methods in short-term training of dermatoscopy to medical students. Methods Fifty-seven medical students in the last year of the curriculum were given a 1-h lecture of either the heuristic- or the analytic-based teaching of dermatoscopy. Before and after this session, they were shown the same 50 lesions and asked to diagnose them and rate for chance of malignancy. Test lesions consisted of melanomas, basal cell carcinomas, nevi, seborrhoeic keratoses, benign vascular tumours and dermatofibromas. Performance measures were diagnostic accuracy regarding malignancy as measured by the area under the curves of receiver operating curves (range: 0-1), as well as per cent correct diagnoses (range: 0-100%). Results Diagnostic accuracy as well as per cent correct diagnoses increased by +0.21 and +32.9% (heuristic teaching) and +0.19 and +35.7% (analytic teaching) respectively (P for all

Original languageEnglish
Pages (from-to)1198-1204
Number of pages7
JournalJournal of the European Academy of Dermatology and Venereology
Volume29
Issue number6
DOIs
Publication statusPublished - Jun 1 2015

ASJC Scopus subject areas

  • Dermatology
  • Infectious Diseases

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