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Teledermoscopic triage of melanoma-suspicious skin lesions is safe: A retrospective comparative diagnostic accuracy study with multiple assessors

The rising incidence of melanoma and the high number of benign lesions excised due to diagnostic uncertainty highlight the need for effective patient triage. This study assesses the safety and accuracy of teledermoscopic triage on a high-prevalence case set with pre-triaged, challenging, melanoma-su...

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Published in:Journal of telemedicine and telecare 2024-10, p.1357633X241286003
Main Authors: Nervil, Gustav Gede, Ternov, Niels Kvorning, Lorentzen, Henrik, Kromann, Charles, Ingvar, Åsa, Nielsen, Kari, Tolsgaard, Martin, Vestergaard, Tine, Hölmich, Lisbet Rosenkrantz
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creator Nervil, Gustav Gede
Ternov, Niels Kvorning
Lorentzen, Henrik
Kromann, Charles
Ingvar, Åsa
Nielsen, Kari
Tolsgaard, Martin
Vestergaard, Tine
Hölmich, Lisbet Rosenkrantz
description The rising incidence of melanoma and the high number of benign lesions excised due to diagnostic uncertainty highlight the need for effective patient triage. This study assesses the safety and accuracy of teledermoscopic triage on a high-prevalence case set with pre-triaged, challenging, melanoma-suspicious lesions. Five dermatologists independently reviewed 250 retrospectively extracted patient cases. Teledermoscopy assessments were simulated for panels of 1, 2, 3 and 5 assessors using two distinct consensus strategies, and , and the sensitivity and specificity of the patient triages were calculated. Triage by a single teledermatologist showed a sensitivity of 92.3% and a specificity of 58.7%. Sensitivity improved with the number of assessors, particularly when using the , though with a considerable drop in specificity. The showed a more balanced improvement in sensitivity and specificity. Safety analyses indicated that diagnostic accuracy decreased with poor image quality and increased case difficulty. Expert teledermoscopic triage of melanocytic skin lesions is highly sensitive and lowers the need for unnecessary excision procedures by half while dismissing as few as 0.4% (95% confidence interval 0-0.6%) of melanomas, even when applied to a high-prevalence pre-triaged subpopulation. Implementation of safety procedures increases accuracy. Using multiple teledermatologists increases sensitivity but at the cost of specificity unless a consensus strategy is applied. Future teledermoscopy guidelines should encompass safety procedures and protocols for disagreement between assessors.
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title Teledermoscopic triage of melanoma-suspicious skin lesions is safe: A retrospective comparative diagnostic accuracy study with multiple assessors
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