Risk factors of lentigo maligna as compared to other melanoma subtypes.
epidemiology
lentigo maligna
melanoma
pigmented lesions
Journal
International journal of dermatology
ISSN: 1365-4632
Titre abrégé: Int J Dermatol
Pays: England
ID NLM: 0243704
Informations de publication
Date de publication:
28 Feb 2024
28 Feb 2024
Historique:
revised:
12
02
2024
received:
14
12
2023
accepted:
13
02
2024
medline:
29
2
2024
pubmed:
29
2
2024
entrez:
29
2
2024
Statut:
aheadofprint
Résumé
Lentigo maligna (LM) exhibits a particular epidemiological profile compared to other histopathologic subtypes of melanoma, with a propensity for the head and neck area and a higher mean age at diagnosis. Few small-scale studies have exclusively evaluated the risk factors for the development of LM. This study aims to compare LM to other histological subtypes of melanoma for the prevalence of known melanoma risk factors, including pigmentary characteristics, history of occupational sun exposure, nevus count, and familial melanoma history. We conducted a case-control study of 152 patients with LM and 784 patients with other melanoma subtypes (OM). The Mann-Whitney t-test and Pearson chi-squared test were used to detect differences between the two groups in continuous and categorical variables, respectively. Univariate and multivariate logistic regression models were then constructed to identify risk factors for developing LM compared to other melanoma subtypes. In multivariate logistic regression analysis, LM was positively associated with a lentigines count >50 and occupational sun exposure compared to OM (OR 2.10, 95% CI 1.35-3.29 and OR 2.18, 95% CI 1.33-3.57, respectively). In contrast, patients with an increased nevus count and fair or medium skin color were less likely to develop LM than OM (OR 0.93, P < 0.001, 95% CI 0.91-0.94, and OR 0.28, P < 0.001, 95% CI 0.17-0.46, respectively). In univariate analysis, LM exhibited a weaker association with all pigmentary traits than OM. No significant associations were found for atypical nevi count and family history. We found significant differences in the prevalence of known melanoma risk factors between LM and other melanoma subtypes, which supports the hypothesis of a distinct pathogenetic pathway of LM.
Sections du résumé
BACKGROUND
BACKGROUND
Lentigo maligna (LM) exhibits a particular epidemiological profile compared to other histopathologic subtypes of melanoma, with a propensity for the head and neck area and a higher mean age at diagnosis. Few small-scale studies have exclusively evaluated the risk factors for the development of LM.
OBJECTIVE
OBJECTIVE
This study aims to compare LM to other histological subtypes of melanoma for the prevalence of known melanoma risk factors, including pigmentary characteristics, history of occupational sun exposure, nevus count, and familial melanoma history.
PATIENTS AND METHODS
METHODS
We conducted a case-control study of 152 patients with LM and 784 patients with other melanoma subtypes (OM). The Mann-Whitney t-test and Pearson chi-squared test were used to detect differences between the two groups in continuous and categorical variables, respectively. Univariate and multivariate logistic regression models were then constructed to identify risk factors for developing LM compared to other melanoma subtypes.
RESULTS
RESULTS
In multivariate logistic regression analysis, LM was positively associated with a lentigines count >50 and occupational sun exposure compared to OM (OR 2.10, 95% CI 1.35-3.29 and OR 2.18, 95% CI 1.33-3.57, respectively). In contrast, patients with an increased nevus count and fair or medium skin color were less likely to develop LM than OM (OR 0.93, P < 0.001, 95% CI 0.91-0.94, and OR 0.28, P < 0.001, 95% CI 0.17-0.46, respectively). In univariate analysis, LM exhibited a weaker association with all pigmentary traits than OM. No significant associations were found for atypical nevi count and family history.
CONCLUSION
CONCLUSIONS
We found significant differences in the prevalence of known melanoma risk factors between LM and other melanoma subtypes, which supports the hypothesis of a distinct pathogenetic pathway of LM.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2024 The Authors. International Journal of Dermatology published by Wiley Periodicals LLC on behalf of the International Society of Dermatology.
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