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

(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.

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.

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]
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