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Nevisense is a non-invasive device that measures electrical impedance spectroscopy (EIS) of individual skin lesions to aid in the diagnosis of melanoma. While EIS has demonstrated high sensitivity in diagnosing melanoma, its impact on a clinician’s diagnostic confidence remains unknown.&#x0D;Objective: To conduct a pilot study to evaluate whether clinician diagnostic confidence, sensitivity, specificity and accuracy can be increased by adding EIS measurement scores to clinical and dermoscopic images of lesions clinically suspicious for melanoma.&#x0D;Methods: Three pigmented lesions specialists and three 4th year medical students completed an online survey to evaluate 34 melanocytic lesions suspicious for melanoma. For each lesion, participants provided their diagnosis, biopsy recommendation, and confidence in diagnosing a lesion as benign or malignant based on history and clinical and dermoscopic images, and again after receiving an EIS score.&#x0D;Results: Addition of EIS scores increased mean biopsy sensitivity for melanoma/severely dysplastic nevi from 70% to 84% (p = .014) and mean diagnostic accuracy from 74% to 86% (p = .005). Mean diagnostic confidence increased for all histopathologic categories for both students and dermatologists (all p &lt; .05).&#x0D;Conclusions: In this pilot study, EIS increased novice and expert diagnosticians’ confidence regarding dermoscopically equivocal melanocytic lesions. Further studies are needed to explore how EIS can help clinicians reassure patients regarding the management of clinically dysplastic melanocytic nevi.

skin

Impact of Electrical Impedance Spectroscopy on Clinician Confidence and Diagnostic Accuracy in Evaluating Melanocytic Skin Lesions Suspicious for Melanoma: A Pilot Study