lentigo


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lentigo

 [len-ti´go] (L.)
a flat, brownish pigmented spot on the skin due to increased deposition of melanin and an increased number of melanocytes; a freckle. (See Atlas 2, Part O.)
lentigo malig´na (malignant lentigo) see lentigo maligna melanoma.
senile lentigo (lentigo seni´lis,) (solar lentigo) a small smooth round brownish patch appearing on the face, neck, or back of the hands of many older people, caused by an increase in pigment; these are entirely harmless. Although these spots are associated with aging, it is not age that is the principal cause but many years of exposure to sun and wind. Called also liver spot.

len·ti·go

, pl.

len·tig·i·nes

(len-tī'gō, len-tij'i-nēz), The singular form is lentigo, not lentigine.
A benign, acquired brown macule resembling a freckle except that the border is usually regular and microscopic elongation of rete ridges is present, with increased melanocytes and melanin pigment in the basal cell layer.
See also: junction nevus.
Synonym(s): lentigo simplex
[L. fr. lens (lent-), a lentil]

lentigo

/len·ti·go/ (len-ti´go) pl. lentig´ines   [L.] a flat brownish pigmented spot on the skin, due to increased deposition of melanin and an increased number of melanocytes.
lentigo malig´na  a circumscribed macular patch of hyperpigmentation, with shades of dark brown, tan, or black, that enlarges slowly and may be a precursor to lentigo maligna melanoma.

lentigo

(lĕn-tī′gō)
n. pl. len·tigines (-tĭj′ə-nēz′)
A small, flat, pigmented spot on the skin.

len·tig′i·nous (-tĭj′ə-nəs), len·tig′i·nose′ (-nōs′) adj.

lentigo

[lentī′gō] pl. lentigines
Etymology: L, freckle
a tan or brown macule on the skin brought on by sun exposure, usually in a middle-aged or older person. It is benign, and no treatment is necessary. However, in some cases it may mimic melanoma and should be biopsied. Compare freckle.
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Lentigo

len·ti·go

, pl. lentigines (len-tī'gō)
A brown macule resembling a freckle except that the border is usually regular, and microscopic proliferation of rete ridges is present; scattered melanocytes are seen in the basal cell layer. It is usually caused by sun exposure in someone of middle age or older.
See also: junction nevus
Synonym(s): lentigo simplex.
[L. fr. lens (lent-), a lentil]

lentigo

(len-ti'go) plural.lentigines [L., freckle] Freckle.
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LENTIGO MALIGNA: SOURCE: Centers for Disease Control and Prevention; Carl Washington, MD

lentigo maligna

A pigmented lesion of the skin in which a large number of superficial, atypical melanocytes are found. Synonym: Hutchinson's freckle
See: illustration

lentigo senilis

Solar lentigo.

solar lentigo

A flat brown spot usually appearing on sun-exposed skin, such as the face or the back of the hands. They are commonly found on the skin of elderly individuals. Although they are popularly referred to as “liver spots, ” they are not caused by diseases of the liver. Synonym: lentigo senilis

lentigo

A local concentration of pigment-containing cells (melanocytes) in the skin. Lentigos (often called lentigenes) resemble freckles but occur as commonly on covered as on uncovered parts and do not become less conspicuous in winter time. They are harmless.

lentigo

regularly bordered brown macules (resembling large freckles) common on dorsum of hands in the elderly
  • lentigo maligna; malignant lentigo; Hutchison's melanotic freckle brown or black, slowly enlarging melanoma of moderate malignancy, characteristically affecting facial skin in the elderly

  • senile lentigo; liver spot; age spot variably pigmented lentigo of sun-exposed skin of elderly Caucasians; fawn-brown, sharply demarcated and slightly raised oval/irregular hyperpigmented patches

lentigo (lenˑ·t·gō),

n brown or tan spot on the skin resulting from exposure to sun; usually benign.
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Lentigo.

len·ti·go

, pl. lentigines (len-tī'gō, len-tij'i-nēz)
A brown macule resembling a freckle except that the border is usually regular, and microscopic proliferation of rete ridges is present; scattered melanocytes are seen in the basal cell layer. It is usually caused by sun exposure in someone of middle age or older.
Synonym(s): lentigo simplex.
[L. fr. lens (lent-), a lentil]

lentigo

pl. lentigines [L.] a flat, brownish pigmented spot on the skin due to increased deposition of melanin and an increased number of melanocytes; a freckle.

orange cat lentigo
lentigo simplex.
lentigo simplex
pigmented macules develop in orange cats from about 1 year of age, mainly on the lips. They are of no significance. Called also orange cat lentigo.
References in periodicals archive ?
If raised, brown lumps appear on a lentigo, consult your doctor as soon as possible so that they can analyse the spot and detect any cancerous changes in cells.
Melanoma is typically divided into 4 types: superficial spreading, nodular, lentigo maligna, and acral lentiginous.
Langley RG, Burton E, Walsh N, Propperova I, Murray SJ: In vivo confocal scanning laser microscopy of benign lentigines: comparison to conventional histology and in vivo characteristics of lentigo maligna.
3-8,16) Historically, three main subtypes of melanoma including superficial spreading melanoma (SSM), lentigo maligna melanoma (LMM) and nodular melanoma (NM) were first described in 1969; (9) desmoplastic melanoma (DM) was added in 1971; (12) and acral lentiginous melanoma (ALM) was introduced in 197710 and defined in 1980.
Ayrica melanositik nevus, lentigo malina, gebelik ve Good-pasture sendromuna eslik eden nadir vakalar da bildirilmistir (2).
4,5,20,21) Nodular and superficial spreading melanomas occur less commonly in the black population, and lentigo maligna melanoma is rare.
In addition, the change may play a role in development of melanocytic lesions such as malignant melanomas, pigmented nevi, and senile lentigo.
The effects of chronic sun exposure are more difficult to determine, but may be associated with lentigo maligna-type melanoma.
c) The gold-standard treatment for melanoma in situ and lentigo maligna is surgical excision with the Mohs technique (18), because these kinds of lesions have no potential for metastatic spread (19).
Actinic lentigo is a benign, brown macule that occurs due to chronic ultra violet damage to the skin.
They are not the precursors of melanoma or lentigo maligna although these more threatening melanocytic lesions certainly do arise more frequently in sun-damaged skin than unexposed skin.
Thomas' Hospital, London, UK) offer an atlas on melanocytic pathology that presents information in a bullet format alongside photos and slides illustrating the pathology of lesions, including lentigo, oral mucosa pigmented lesions, and conjunctival melanocytic lesions, for use in diagnosis.