mole

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mole

(mōl),
1.
See also: Avogadro number. Synonym(s): nevus (2)
2.
See also: Avogadro number. Synonym(s): nevus pigmentosus
3. An intrauterine mass formed by the degeneration of the partly developed products of conception.
See also: Avogadro number.
4. In the SI, the unit of amount of substance, defined as that amount of a substance containing as many "elementary entities" as there are atoms in 0.0120 kg of carbon-12; "elementary entities" may be atoms, molecules, ions, or any describable entity or defined mixture of entities and must be specified when this term is used; in practical terms, the mole is 6.0221367 × 1023 "elementary entities."
See also: Avogadro number.

mole

a fleshy mass or tumor formed in the uterus by the degeneration or abnormal development of a zygote.
hydatid mole , hydatidiform mole an abnormal pregnancy characterized by placental abnormality involving swollen chorionic villi, which form a large, grapelike mass of vesicles, by trophoblastic hyperplasia, and by loss of fetal blood vessels in the villi. It is complete when all villi are swollen and fetal tissues are absent, and partial when only some villi are swollen and fetal tissues are present. Complete moles usually possess only paternal chromosomes; partial moles are usually triploid and possess both maternal and paternal chromosomes.

mole

(mōl) the base SI unit of amount of matter, being that amount of substance that contains as many elementary entities as there are carbon atoms in 0.012 kg of carbon 12 (12C), Avogadro's number (6.023 × 1023).

mole

a nevocytic nevus; also, a pigmented fleshy growth or, loosely, any blemish of the skin.
pigmented mole  see under nevus.

mole 1

(mōl)
n.
A skin lesion, commonly a nevus, that is typically raised and discolored.

mole 2

(mōl)
n.
A fleshy abnormal mass formed in the uterus by the degeneration or abortive development of an ovum.

mole1

Etymology: L, mass
,
Usage notes: informal.
1 a pigmented nevus.
2 (in obstetrics) a hydatid mole.

mole2

Etymology: L, molecula, small mass
the standard unit used to measure the amount of a substance. A mole of a substance is the amount containing the same number of elementary particles as there are atoms in 12 g of carbon 12, typically 6.02 × 1023 particles. This number is called Avogadro's number. Also spelled mol. molar, adj.

mole

Chemistry
The number of grams equal to a chemical’s formula weight, an element’s atomic weight, or a compound’s molecular weight.
 
Dermatology
A nonspecific lay term for any pigmented lesion, benign or malignant.

Obstetrics
(1) Hydatidiform mole, see there.
(2) Complete mole. The chorionic villi are swollen, often accompanied by trophoblastic proliferation but not foetal tissue. CMs are 10–20 times more common in Southeast Asia, and demonstrate innumerable grape-like avascular chorionic villi. Most CMs have a 46 XX genotype, of which both X chromosomes are of paternal origin; in 10–15% of the complete moles that are 46 XY, both the X and Y chromosomes are of paternal origin. CMs may be due to abnormal gametogenesis and fertilisation: while in 46 XX moles there is fertilisation of an empty ovum with no effective genome by a haploid sperm that duplicates without cytokinesis, in the 46 XY complete moles there may be fertilisation of an empty ovum by two haploid sperm with subsequent fusion and replication. 
(3) Partial mole. A mass characterised by a mixture of foetal tissue with normal oedematous villi and/or hydropic degeneration. Most partial moles are triploid (47 XXY > 47 XXX, > 47 XYY), rarely also trisomy 16, and may be the result of unsuccessful dual fertilisation of a single ovum; the conceptus does not die, but remains as a proliferating “tumour”. 
(4) Invasive mole. A trophoblastic proliferation that penetrates the myometrium and may undergo malignant degeneration into a choriocarcinoma.

mole

Dermatology A nonspecific lay term for any pigmented lesion, benign or malignant. See Melanoma, Nevus Obstetrics Hydatidiform mole, see there.

mole

(mol) (mōl)
1. Synonym(s): nevus (2) .
2. Synonym(s): nevus pigmentosus.
3. An intrauterine mass formed by the degeneration of the partly developed products of conception.
4. In the SI, the unit of amount of substance, defined as that amount of a substance containing as many "elementary entities" as there are atoms in 0.0120 kg of carbon-12; elementary entities may be atoms, molecules, ions, or any describable entity or defined mixture of entities and must be specified when this term is used; in practical terms, the mole is 6.0221367 215 1023 "elementary entities."
See also: Avogadro number
[A.S. māēl (L. macula), a spot]

1 mole

[Old English mal, blemish]
Enlarge picture
MOLES
Enlarge picture
MOLES
A birthmark or nevus. See: illustration

CAUTION!

Moles should be examined and, if necessary, be removed by experienced professionals.

Patient care

The patient is encouraged to regularly inspect areas of the skin that have moles and consult a health care professional about any mole that changes color or shows signs of growth or changes in appearance, as such changes may indicate neoplasm.

pigmented mole

Nevus pigmentosus.

vascular mole

Hemangioma.illustration

2 mole

, mol (mōl) [Ger. Mol, abbr. for Molekulargewicht, molecular weight]
In the Système International d’ Unités (SI system), 1 mole of a substance contains as many atoms as exist in 0.012 kg of carbon 12.

3 mole

(mol) [L. moles, a shapeless mass]
A uterine mass arising from a poorly developed or degenerating ovum.

blood mole

A mass made up of blood clots, membranes, and placenta, retained after fetal death.

Breus mole

See: Breus mole

carneous mole

A uterine mass that consists of clotted blood and remnants of the placenta and fetal membranes. It may be retained in the uterus for many months after a miscarriage or missed abortion. Synonym: fleshy mole

false mole

A mole formed from a uterine tumor or polypus.

fleshy mole

Carneous mole.

hydatid mole

A rare form of gestational trophoblastic disease in which there is overproduction of chorionic villi normally destined to develop into the placenta. A partial mole is characterized by an abnormal placenta and some fetal development; a complete mole, by an abnormal placenta and no fetal development. Complete and partial moles differ in karyotype. Complete moles show an absence of maternal chromosomes and a duplication of spermatozoal chromosomes. Partial moles exhibit either karyotype 69 XXY or karyotype 69 XYY due to the presence of the maternal X chromosome. Symptoms of molar pregnancy may include abnormal uterine growth (usually increased), nausea and vomiting, vaginal bleeding, and high blood pressure. Diagnosis is made by measuring serum human chorionic gonadotropin levels and ultrasonography, and definitive treatment is complete surgical removal of the mole, usually with curettage. Moles that are not removed may become malignant. Eighty percent of all moles are benign. See: gestational trophoblastic disease

stone mole

A fleshy mole that has undergone calcific degeneration in the uterus.

true mole

A mole representing the degenerated embryo or fetus.

vesicular mole

Hydatid mole.

mole

1. A coloured (pigmented) birth-mark (naevus). Hairy moles may be disfiguring but are never dangerous. Moles seldom undergo malignant change, but any alteration is size, shape or colour should be reported at once. Moles are easily removed under local anaesthesia. From the Latin mola , a millstone. See also MALIGNANT MELANOMA.
2. The basic unit of amount of substance; the amount that contains the same number of entities as there are atoms in 0.012 kg of carbon-12. The entity may be an atom, a molecule, an ion, and so on. From the German molekül , a molecule.

mole

the basic SI unit of amount of substance. One mole of any substance contains 6.023 × 1023 (Avogadro's number) molecules, atoms or ions of an element or compound equal to the relative molecular mass in grams. Symbol: mol.

Mole

A mass of abnormal, partially developed tissues inside the uterus (womb). Moles develop during a pregnancy that begins with an abnormal fertilization.
Mentioned in: Choriocarcinoma

naevus

benign, localized, overgrowth of skin melanocytes or blood vessels (see ABCDE)
  • naevus pigmentosus; mole congenital, raised/sessile, pigmented, benign skin lesion

  • naevus pilosus hairy mole

  • naevus spilus; speckled lentiginous naevus small light brown macule, increasing in size over time to form a speckled benign lesion of up to 10cm diameter; it should be monitored as it may undergo malignant changes (see ABCDE)

  • spider naevus small skin area with visible local arteries, resembling a spider

  • strawberry naevus small, raised, vascular naevus, resembling a strawberry

  • vascular naevus; port-wine stain congenital, often widespread, red/purple discoloration of skin, caused by capillary hypertrophy

mole,

n the number of grams of a substance that is equivalent to the molecular weight. A mole of any compound or mixture comprises the same number of atoms or molecules. This number is called Avogadro's number, 6.02 × 1023.

mole

(mol) (mōl)
1. Synonym(s): nevus (2) .
2. Synonym(s): nevus pigmentosus.
3. An intrauterine mass formed by the degeneration of the partly developed products of conception.
[A.S. māēl (L. macula), a spot]

mole,

n a pigmented nevus; a benign lesion of melanin.

mole

1. a fleshy mass formed in the uterus by abortive development of an ovum.
2. the amount of a substance that contains as many elementary entities (atoms, ions, molecules, or free radicals) as there are atoms in 0.4 oz (12 grams) of pure carbon-12, i.e. equivalent to Avogadro's number (6.023 × 1023) of elementary entities; the amount of a chemical compound having a mass in grams equal to its molecular weight.
3. a fleshy growth caused by a defect in development of the skin; a nevus. The name is also sometimes incorrectly used to describe the tactile hairs and underlying tubercles which are sometimes distinctively pigmented, on either side of the face in dogs.
4. a highly efficient burrowing insectivorous, small mammal in the family Talpidae or Chrysochloridae, with black, velvety fur, and almost blind and deaf.

hydatid mole, hydatidiform mole
a condition in females characterized by an abnormal pregnancy resulting from a pathological ovum, with proliferation of the epithelial covering of the chorionic villi and dissolution and cystic cavitation of the avascular stroma of the villi. It results in a mass of cysts resembling a bunch of grapes.
pigmented mole
see pigmented nevus.

möle

[Scand.] a deformity of calves which have short and malformed limbs, hydrocephalus, mandibular hypoplasia and facial tissue deficits. The body is edematous. An inherited defect in Danish cattle.

Patient discussion about mole

Q. How can you know if a mole is a skin cancer or not? I'm only 15, but I’ve had this small thing on my right shoulder for a reeeeaaaally long time. It's the same color as my skin. It’s smaller than the head of a pencil eraser, perfectly round, and its smooth. I've never worried about it seriously, until about a week ago, when I read an article in a magazine about skin cancer. Even then I wouldn't have worried about it, because It didn't really match any of the symptoms, except one. It did bleed once about 2 1/2 years ago. And it said bleeding was a big sign I don't know, what do you think? And please try and say something other than," go have it checked out". Because I currently have no insurance. Thanks :]

A. If I’m not mistaken- there are clinics that do free checkups for skin cancer. I know that in my town there are couple. Here is a link I got when I googled “do free checks for skin cancer”:
http://skinsurgeryclinic.co.nz/free.htm
look for one near your home.

Q. My husband has a very small mole that was cut.We can not seem to get it to stop bleeding. Any suggestions? tried a shaving pencil, and band-aids of every size. Just will not stop bleeding.

A. In this case, you should go see the doctor who took the mole out, or any dermatologist actually, that can burn the spot a little bit to help it stop bleeding.

More discussions about mole