Volume 38, Issue 1 pp. 77-83
SYSTEMATIC REVIEW

Prevalence of subungual melanoma in patients with cutaneous malignant melanoma: A systematic review and meta-analysis

Aikaterini Tsiogka

Corresponding Author

Aikaterini Tsiogka

Faculty of Medicine, First Department of Dermatology-Venereology, Andreas Sygros Hospital, National and Kapodistrian University of Athens, Athens, Greece

Correspondence

Aikaterini Tsiogka, Hospital for Skin Diseases “A. Sygros”, 5 I. Dragoumi St. GR–16121 Athens, Greece.

Email: [email protected]

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Adam I. Rubin

Adam I. Rubin

Department of Dermatology, Perelman School of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA

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Stamatios Gregoriou

Stamatios Gregoriou

Faculty of Medicine, First Department of Dermatology-Venereology, Andreas Sygros Hospital, National and Kapodistrian University of Athens, Athens, Greece

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Stergios Soulaidopoulos

Stergios Soulaidopoulos

First Department of Cardiology, School of Medicine, Hippokration General Hospital, National and Kapodistrian University of Athens, Athens, Greece

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Helena Belyayeva

Helena Belyayeva

Faculty of Medicine, First Department of Dermatology-Venereology, Andreas Sygros Hospital, National and Kapodistrian University of Athens, Athens, Greece

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Dimitris Rigopoulos

Dimitris Rigopoulos

Faculty of Medicine, First Department of Dermatology-Venereology, Andreas Sygros Hospital, National and Kapodistrian University of Athens, Athens, Greece

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First published: 29 August 2023

Abstract

Background

Subungual melanoma (SUM) is a rare type of cutaneous malignant melanoma (CMM) associated with poor prognosis, while data regarding its prevalence are scarce.

Objectives

We sought to provide a comprehensive systematic review and meta-analysis of the prevalence rates of SUM among all types of CMM, considering certain demographic and clinical characteristics.

Methods

The MEDLINE electronic database was searched systematically to identify eligible studies providing prevalence rate estimates of SUM in patients with CMM. Included studies were further analysed to estimate the relative prevalences of SUM according to study design, study years, geographical region and sex distribution.

Results

Twenty-eight studies met the inclusion criteria. The overall SUM prevalence was 1.9% (95% CI [1.5%–2.3%]). The prevalence of SUM did not differ significantly between population- and hospital-based studies and remained stable over time. However, it was found to be significantly higher in Asians compared to patients of other geographical regions as well as in studies with more men than women compared to those with female preponderance (p < 0.001).

Conclusions

In all, the overall SUM prevalence among all subtypes of CMM was estimated at 1.9%, without significant changes over time, and was found to exhibit significant variability between subgroups of different geographical regions.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflict of interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author, [AT], upon reasonable request.

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