Cutaneous melanomas associated with nevi
Cutaneous melanomas associated with nevi
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DOI:
10.1001/archderm.139.12.1620
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发表时间:
2003-12-01
影响因子:
--
通讯作者:
Tsao, H
中科院分区:
文献类型:
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作者:
Bevona, C;Goggins, W;Tsao, H
Objective: To determine the frequency of and the histologic and clinical factors associated with melanoma existing in histologic contiguity with a nevus.Design: Pathology reports from melanomas collected from January 1, 1993, to December 31, 1997, were retrospectively reviewed.Setting: Independent, community-based dermatopathology laboratory.Patients: A total of 1606 patients with a histologic diagnosis of melanoma.Intervention: None.Main Outcome Measures: Differences in histologic (subtype, Breslow thickness, and Clark level) and clinical (age, sex, and anatomic location) features between melanomas that are associated and unassociated with a nevus.Results: Twenty-six percent of the melanomas reviewed were histologically associated with nevi (dysplastic nevi, 43.0%; and other nevi, 57.0%). Factors that were significantly associated with an increased likelihood of a melanoma being histologically contiguous with a nevus included younger age, superficial spreading subtype, truncal location, Breslow thickness, and Clark level. However, after multivariate analysis, only younger age (odds ratio, 1.27; 95% confidence interval, 1.19-1.37), superficial spreading subtype (odds ratio, 2.96; 95% confidence interval, 2.17-4.02), and truncal location (odds ratio, 3.26; 95% confidence interval, 2.55-4.19) remained significant.Conclusions: Most melanomas were not histologically contiguous with a nevus. Younger age, superficial spreading subtype, and truncal location are independent significant predicators of a melanoma being histologically associated with a nevus.