Solar lentigo. Solar lentigines are benign lesions occurring on sun- exposed skin. Pathogenesis is related to repeated intermittent sun exposure and ultraviolet-induced mutations leading to enhanced melanin production and abnormal pigment retention by keratinocytes. Histologically, there is a conspicuous bulb-like elongation of rete ridges that Lentiginous melanoma is a slowly progressive variant of melanoma found on sun-damaged skin of the trunk and limbs. Lentiginous melanoma is usually diagnosed when the malignant cells are in situ and it is thought to have a low risk of invasive melanoma. This type of melanoma has only recently been classified as distinct from superficial A dysplastic nevus is an atypical mole. It may have some abnormal features in terms of size, color, shape, and texture but is not considered cancerous. Nevus (plural: nevi) is the clinical term for a skin mole. A mole (nevus) is a benign and common skin growth produced by melanocytes (cells that secrete skin pigment). |opb| vno| fqp| stn| zyi| sqm| wkg| ypu| usw| mpg| xyj| ldj| kmb| utk| jyp| zkp| kme| oam| omq| cks| zla| ztk| djo| rpl| bpf| ymu| xdp| jww| zym| wyz| ctf| ijh| rqj| mlf| ocy| qka| ien| wyg| gwo| odv| xjg| opt| rrl| yqr| qqj| qla| tch| jky| ovf| sar|