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Clinical and Dermatoscopic Diagnosis of Malignant Melanoma: Assessed by Expert and Non-expert Groups

doi: 10.1080/000155599750010715

Abstract:

We investigated the nosographic and diagnostic probabilities and likelihood ratios of dermatoscopy in order to evaluate the method's role in decision-making regarding melanoma. Clinical slides and dermatoscopic photos were obtained from 232 patients referred for dermatoscopy. Four dermatoscopy "experts" and 5 "non-experts" assessed the slides. Diagnoses were compared with histopathology. Sensitivity of the clinical assessments was 0.78 vs. 0.69 ("experts" vs. "non-experts"), sensitivity of dermatoscopy assessment was 0.83 vs. 0.69 (p=0.04). The expert group demonstrated increased specificity (from 0.89 to 0.94) when applying dermatoscopy compared with clinical assessment alone (p=0.03). Positive likelihood ratios were doubled in the "expert group" and the negative likelihood ratios improved 25% with dermatoscopy compared with clinical assessment.

Authors:

Henrik Lorentzen, Kaare Weismann, Carsten Sand Petersen, Frederik Grønhøj Larsen, Lena Secher, Vera Skødt

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Volume 79, Issue 4

DOI: 10.1080/000155599750010715

Pages: 301-304

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