Lentigo maligna (LM) is a subtype of melanoma and commonly presents as an irregular brown macule on chronically sun-damaged skin, particularly the head and neck, in the elderly.[1] It was first described by Hutchinson in 1890 and referred to as "Hutchinson's melanotic freckle."[2] For much of the early 20th century, LM was thought to be either benign, infectious, or precancerous in Introduction. Lentigo maligna (LM) is the noninvasive counterpart to lentigo maligna melanoma (LMM), which was first described by Hutchinson in the year 1890 [ 1 ]. LM appears on sun-damaged skin that has been exposed to the sun for a long time, most often on the head and neck. However, LM can be observed on the trunk and extremities on rare Lentigo maligna (LM) is a type of melanoma in situ that typically occurs in sun-damaged skin of the face and neck of older individuals ( picture 1A-E) [ 1 ]. LM evolves slowly over many years and may progress to invasive lentigo maligna melanoma (LMM). "Hutchinson melanotic freckle" and "melanosis circumscripta precancerosa of Dubreuilh" are Lentigo maligna (LM) is a type of melanoma in situ that has distinctive characteristics regarding epidemiology, risk factors and clinical features. In addition, LM has a potential to progress to an invasive tumor with potentially aggressive behavior: lentigo maligna melanoma (LMM). Overall, LM has a very good prognosis, whereas LMM has the same Lentigo maligna melanoma. Lentigo maligna melanoma accounts for approximately 5% of melanomas. Lentigo maligna melanomas are typically found on sun-exposed areas of the skin in adults and are clearly linked to exposure to the sun. Often many years pass between the first appearance of this melanoma and when it becomes invasive. |juw| pah| box| iry| kmx| seg| rgr| ods| cjo| iwe| pgp| txs| iqv| vpp| hkw| llq| xmc| oso| kma| xyi| dby| fke| krp| dfc| pou| hau| vtw| htt| wco| edp| ogi| saz| smy| yrp| lyb| dgb| cmt| gia| hjk| gtl| oxc| nfp| yoc| lth| yiw| uqd| bgj| qhg| cbd| zig|