The risk of cutaneous melanoma in melanocytic nevi*
نویسنده
چکیده
The data on melanoma associaed with melanocytic nevus are controversial. A longitudinal prospective study of 107 cases of cutaneous melanoma revealed that 9 (8.4%) cases were presumed to be linked to a precursor lesion, but only in 1 (0.9%) out of these cases the histopathological examination showed an associated melanocytic nevus. The vague information of a preexisting lesion of cutaneous melanoma is not sufficient to consider it a tumour precursor and it requires histopathological evidence to confirm the diagnosis.
منابع مشابه
The risk of melanoma and neurocutaneous melanosis associated with congenital melanocytic nevi.
Congenital melanocytic nevi are commonly encountered in clinical practice. Although the development of malignant melanoma arising in small and intermediate congenital melanocytic nevi is rare, there is a significant risk of malignant degeneration associated with large congenital melanocytic nevi, in particular those that arise on the torso in the so-called "bathing trunk" distribution, where th...
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Large congenital melanocytic nevi are cutaneous lesions regarded by many as premalignant; estimates of malignancy incidence range from 0 to 42 percent. Given the often complex and extensive nature of large congenital melanocytic nevi resection and reconstruction, the risk of malignant transformation is a crucial factor that surgeons and families must weigh when deciding whether or not to excise...
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BACKGROUND To the authors' knowledge, limited data are available from Mediterranean populations concerning risk factors for malignant melanoma. A few Italian case-control studies have produced conflicting results regarding the association between malignant melanoma and pigmentary traits, sunburns, and melanocytic nevi. METHODS A case-control study was conducted within the framework of the Ita...
متن کاملمطالعه اپیدمیولوژیک اختلالات ملانوسیتی در شهرستان همدان در سال 1380
Introduction & Objective: Melanocytic nevi are very frequent and there is a relationship between these nevi and malignant melanoma. So we need to know the prevalence and kinds of these nevi in our country. The aim of this study was to clarify the prevalence and kinds of melanocytic nevi in rural areas of Hamadan in the west of Iran. Materials & Methods: A cluster random sampling was followed...
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The main objective of this study was to assess whether cutaneous malignant melanoma (CMM) shows a stronger relation with the melanocytic nevi count at the site where CMM was diagnosed than with the melanocytic nevi count at other sites, stratifying by histologic CMM type, in a southern Mediterranean population. Cases and controls were selected from a population in southern Spain in 1988-1993. T...
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The number of melanocytic nevi is the strongest risk factor for cutaneous melanoma. As pigmented skin lesions are visible to everybody, the question has been raised about whether people can identify themselves as being at risk for melanoma through self-counting of moles. In 1991, a total of 513 central European melanoma patients and 498 controls were asked to count the total number of nevi and ...
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