TY - JOUR
T1 - Differences in dermoscopic images from nonpolarized dermoscope and polarized dermoscope influence the diagnostic accuracy and confidence level
T2 - A pilot study
AU - Wang, Steven Q.
AU - Dusza, Stephen W.
AU - Scope, Alon
AU - Braun, Ralph P.
AU - Kopf, Alfred W.
AU - Marghoob, Ashfaq A.
PY - 2008/10
Y1 - 2008/10
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=53149149439&partnerID=8YFLogxK
U2 - 10.1111/j.1524-4725.2008.34293.x
DO - 10.1111/j.1524-4725.2008.34293.x
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C2 - 18637816
AN - SCOPUS:53149149439
SN - 1076-0512
VL - 34
SP - 1389
EP - 1395
JO - Dermatologic Surgery
JF - Dermatologic Surgery
IS - 10
ER -
