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The importance of total‐body photography and sequential digital dermatoscopy for monitoring patients at increased melanoma risk
Author(s) -
Deinlein Teresa,
Michor Carina,
HofmannWellenhof Rainer,
SchmidZalaudek Karin,
FinkPuches Regina
Publication year - 2020
Publication title -
jddg: journal der deutschen dermatologischen gesellschaft
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 60
eISSN - 1610-0387
pISSN - 1610-0379
DOI - 10.1111/ddg.14158
Subject(s) - dermatoscopy , medicine , melanoma , incidence (geometry) , retrospective cohort study , observational study , dermatology , surgery , radiology , physics , cancer research , optics
Summary Background and objectives The incidence of melanoma is rising and prevention plays an important role. Multiple nevi as well as a medical history of melanoma are important risk factors. In affected patients, a two‐step algorithm consisting of total‐body photography (TBP) and sequential digital dermatoscopy (SDD) is a helpful diagnostic tool. Patients and methods This was a retrospective observational study that lasted six years in order to evaluate the significance of the two‐step algorithm. Cases were evaluated based on distinct dermoscopic patterns and statistical analyses were performed with the latest version of SPSS. Results 6020 dermoscopic images of 214 patients were included. TBP was performed at a mean interval of 16.9 months (SD ± 1.43 months), while SDD was performed every 9.9 months (SD ± 1.68 months). The number needed to excise was 4.6 and the number needed to monitor was 548. Excisions were mostly performed because dynamic changes were observed. A total of eleven melanomas were detected and had a mean tumor thickness of 0.44 mm (SD ± 0.15 mm; range 0.2–0.6 mm). Conclusions Invasive melanomas had a tumor thickness of less than 0.6 mm, thus providing evidence of an effective strategy for early melanoma detection. Excisions of benign nevi were minimized as indicated by a low number needed to excise.