BACKGROUND The presence of large nevi (>4 mm diameter) is the most important predictor of melanoma risk. We report on the simultaneous assessment of behavioral, constitutional, and environmental risk factors for the prevalence of large nevi in a population-based study of 33,305 individuals and compare those to risk factors for melanoma. METHODS We used self-reported data from a population-bas...

BACKGROUND Very little is known about possible association of nevi and melasma. The study objective was to determine if there is an association between melasma and existence of different kinds of nevi. METHODS In a case-control study, 120 female melasma patients referred to dermatology clinic of Ardabil and 120 patients referred to other specialty clinics who lacked melasma were enrolled afte...

We previously reported a favorable histologic response of dysplastic nevi to topical tretinoin in three patients. To investigate the anticancer and cancer preventive effects of retinoids we have examined the effect of systemic isotretinoin on dysplastic nevi. After confirmatory baseline biopsies, eleven patients with the dysplastic nevus syndrome were treated with oral isotretinoin, 40 mg twice...

We report a case of basal cell carcinoma that appeared from an epidermal verrucous nevus in a 61-year-old patient. The onset of basal cell carcinoma in sebaceous nevi, basal cell nevi and dysplastic nevi is relatively common, but it is rarely associated with epidermal verrucous nevi. There is no consensus on whether the two lesions have a common cellular origin or whether they merely represent ...

BACKGROUNDS Epidemiological studies have shown a significant relationship between melanocytic nevi and cutaneous melanoma. OBJECTIVE To evaluate the development of melanocytic nevi in the pupils of a school composed primarily of children of Dutch descent and to assess the effect of environmental factors on these individuals whose phenotypic characteristics were similar to those of their ances...

Introduction Twenty-five - fifty percent of skin melanomas arise from nevi. Melanocyte proliferation is activated by BRAFV600E, then is arrested, but single nevi transform to melanomas. p16 controls arrest, and p16 loss may promote transformation. Aim To analyze BRAFV600E, p16 expression and melanocyte proliferation in dermal, compound and dysplastic nevi, cells of primary and metastatic mela...

induced senescence is a program initiated by the aberrant activation of oncogenes. Once engaged, this program irreversibly limits the proliferative capacity of cells and may potently prevent tumor formation in vivo. Human nevi (moles) display many features of oncogene-induced senescence; they remain growth arrested for decades, display increased p16 INK4a expression, stain positive for senescen...

erbB receptors contribute to tumor formation and progression. Variable expression of erbB1, erbB2, and erbB3 has been reported in nevi and melanomas; erbB4 has hardly been investigated. We examined the expression of all 4 erbB receptors in common and dysplastic nevi and melanomas. Formalin-fixed, paraffin-embedded tissues of 100 melanomas, 27 common nevi, and 23 dysplastic nevi were immunostain...

Meyerson nevi occur whenever a rare focal and transitory eczematous eruption arises around melanocytic lesions. The same phenomenon has also been observed in non-melanocytic lesions as well. Herein we report the case of a 25 year old, male patient, who had noticed, two months before, the arising of a pruriginous and erithematous halo around two nevi localized on his abdomen. The lesions were fo...