Atypical Seborrheic Keratosis of the Umbilicus

Hamich, Soumaya; Benahmed, Jihane; Znati, Kaoutar; Senouci, Karima

doi:10.23937/2474-3682/1510195

Cited by 1 publication

(3 citation statements)

References 2 publications

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Section: Resultsmentioning

confidence: 99%

“…When it comes to seborrheic keratosis, the systematic review revealed a single case that met the inclusion criteria. The dermoscopic image presented by Hamich et al [38] was not specific and comprised an exophytic keratotic projection pattern with dotted vessels, brown and yellowish structureless areas, and aggregated blue-grey globular-like structures (Figure 7). (B) Dermoscopy shows structures corresponding to both seborrheic keratosis and dermal nevus, namely dark-brown structureless areas, thick curved lines (fissures and crypts), and white/yellow disseminated dots/clods (milia-like cysts) in seborrheic keratosis and a light-brown pigmented network and structureless areas along with dotted vessels and white/yellow disseminated dots/clods (milia-like cysts) in dermal nevus (FotoFinder, Medicam 800 HD, FotoFinder Systems GmbH, Bad Birnbach, Germany; ×20 magnification, immersion gel).…”

Section: Seborrheic Keratosismentioning

confidence: 99%

“…The following supporting information can be downloaded at: , Table S1: Joanna Briggs Institute Appraisal tool questions; Table S2: Risk of bias assessment; Table S3: Overview of the characteristics of included studies. References [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ] are cited in the Supplementary Materials.…”

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confidence: 99%

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Dermoscopy of Umbilical Lesions—A Systematic Review

Żółkiewicz,

Sławińska,

Maińska

et al. 2024

JCM

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Background: The umbilicus is a fibrous remnant located in the centre of the abdomen. Various entities may be encountered in this special anatomical location; however, little is known about their dermoscopic presentation. The aim of this study was to provide a comprehensive summary of existing evidence on dermoscopic features of umbilical lesions. Methods: Studies assessing dermoscopic images of umbilical lesions were included in this study. No age, ethnicity or skin phototype restrictions were applied. Papers assessing lesions outside of the umbilical area, lacking dermoscopic images and/or dermoscopic description and not related to the topic were excluded. Embase, Medline and Cochrane Library were searched from inception to the end of May 2023. The Joanna Briggs Institute critical appraisal tools were used to evaluate the risk of bias of the selected studies. The quality and the level of evidence of included studies were assessed according to the Oxford 2011 Levels of Evidence. Thirty-four studies reporting a total of 39 lesions met the inclusion criteria and were included in qualitative analysis. Results: A qualitative synthesis of the following entities was performed: melanoma, nevi, basal cell carcinoma, fibroepithelioma of Pinkus, Sister Mary Joseph nodule, mycosis fungoides, dermatofibroma, endometriosis, epidermal cyst, granuloma, intravascular papillary endothelial hyperplasia, lichen planus, omphalolith, seborrheic keratosis, and syringoma. Conclusions: Dermoscopy is a non-invasive technique that may be useful in the differential diagnosis of umbilical lesions. The main limitations of this study were lack of a high level of evidence in the studies and the lack of uniformity in applied dermoscopic terminology between included studies.

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Section: Resultsmentioning

confidence: 99%

Section: Seborrheic Keratosismentioning

confidence: 99%