Abstract Number: 230

Change detection of skin lesions using 3-D Total Body Photography versus conventional dermoscopic images

S. Thomas2, 1, S. Menzies3, 4, H. Soyer2, 1, H. Schaider2, 1, 5

Meeting: 2019 Dermcoll

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Session Title: All Abstracts

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The detection of melanoma and non-melanoma skin cancers is a process where the dermatologist relies on history, macroscopy and dermoscopy toward forming clinical judgment. Whilst dermoscopy is easily accessible, it is also labour intensive as the dermoscopist often performs this many times daily on patients with multiple naevi.
Total body photography has recently improved from 2D imaging, to now 3D total body photography with individual lesions having linked dermoscopic photographs – a technology particularly of benefit in surveillance of patients with strong personal or family history of melanoma, or multiple dysplastic naevi (1).
“Pseudodermoscopy” is an emerging field where high quality collated photo images can diagnose and monitor lesions (2). Used appropriately, this may raise dermatologists efficiency by only having to perform dermoscopy of lesions alerted to, assuming the sensitivity and specificity of recognising sinister or changing lesions was adequate.
In this presentation, I will discuss my research proposal and initial findings, of a study assessing the ability of the Vectra® machine to diagnose lesions, and detect change over a 12 month follow up period. One observer will perform this task with 10 randomised lesions from each of 70 patients from 3D total body images, while a second observer will perform the same task directly from dermoscopy images. Results between the two groups will then be compared.
This study could lead future research that increases reliance by dermatologists towards 3D total body photography if it can be shown useful in guiding dermoscopy or biopsy of only appropriate lesions.