Differences in dermoscopic images from nonpolarized dermoscope and polarized dermoscope influence the diagnostic accuracy and confidence level: A pilot study Journal Article

  

Authors:	Wang, S. Q.; Dusza, S. W.; Scope, A.; Braun, R. P.; Kopf, A. W.; Marghoob, A. A.
Article Title:	Differences in dermoscopic images from nonpolarized dermoscope and polarized dermoscope influence the diagnostic accuracy and confidence level: A pilot study
Abstract:	BACKGROUND: Studies have demonstrated differences in colors and dermoscopic structures observed with polarized dermoscopes (PDs) and nonpolarized dermoscopes (NPDs). OBJECTIVE: The objective was to evaluate whether diagnosis and diagnostic confidence changes when viewing dermoscopic images from NPDs and PDs. METHODS: A total of 100 dermatologists participated in the study. Twenty-five pigmented lesions were shown in the study, consisting of 7 seborrheic keratoses (SK), 3 basal cell carcinomas, 2 atypical nevi, 5 malignant melanomas (MM), 3 dermatofibromas, 3 blue nevi, and 2 hemangiomas. Two images of each lesion (one NPD and one PD) were included. The McNemar test and paired t-test were used for the statistical analysis. RESULTS: Ninety-one participants completed the study. Significant differences in the diagnoses were observed for the SK, atypical nevus, and MM images. Seventy-five percent and 59% of the final participants correctly diagnosed SK when presented with the NPD and PD images, respectively. For MM, 23 and 34% made the correct diagnoses with the NPD and PD images, respectively. CONCLUSIONS: Viewing lesions with NPD versus PD can affect the diagnosis and diagnostic confidence of physicians that are novices with dermoscopy. Further studies including physicians at different expertise levels and a larger sample of lesions are needed to further explore the differences. The authors have indicated no significant interest with commercial supporters. © 2008 by the American Society for Dermatologic Surgery, Inc.
Keywords:	controlled study; major clinical study; diagnostic accuracy; melanoma; dermoscopy; basal cell carcinoma; skin neoplasms; epiluminescence microscopy; pilot projects; seborrheic keratosis; pigmentation disorders; dysplastic nevus; dermatofibroma; skin diseases; hemangioma; microscopy, polarization; blue nevus; microscope; dermoscope
Journal Title:	Dermatologic Surgery
Volume:	34
Issue:	10
ISSN:	1076-0512
Publisher:	Lippincott Williams & Wilkins
Date Published:	2008-10-01
Start Page:	1389
End Page:	1395
Language:	English
DOI:	10.1111/j.1524-4725.2008.34293.x
PUBMED:	18637816
PROVIDER:	scopus
DOI/URL:	http://www.scopus.com/inward/record.url?eid=2-s2.0-53149149439&partnerID=40&md5=c290c4a22eac9f487dabf498dd0301d7
Notes:	--- - "Cited By (since 1996): 8" - "Export Date: 17 November 2011" - "CODEN: DESUF" - "Source: Scopus"

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