answersLogoWhite

0

Definition

A congenital pigmented or melanocytic nevus is a dark colored, often hairy patch of skin that is present at birth.

Smaller in infants and children, they usually continue to grow along with the child. A giant pigmented nevus is larger than 8 inches once it stops growing.

Alternative Names

Congenital giant pigmented nevus; Giant hairy nevus; Giant pigmented nevus; Bathing trunk nevus; Congenital melanocytic nevus - large

Causes, incidence, and risk factors

Bathing trunk nevi are thought to be caused by defects or problems that occur as a baby grows in the womb. However, in some families bathing trunk nevus may be inherited.

Bathing trunk nevus may occur with:

Smaller congenital pigmented or melanocytic nevi can be common in children and are less dangerous. However, larger or giant nevi are fairly rare.

Symptoms

A nevus will appear as dark-colored patch with any of the following:

  • Brown to bluish-black color
  • May contain hair
  • Skin surface may be smooth to irregular or wart-like
  • Borders of these lesions are regular or uneven
  • Small, satellite areas (maybe)

They are commonly found on the upper or lower parts of the back or the abdomen. They may also be found on the arms, legs and elsewhere on the body, including the palms, soles, and even the mucous membranes or mouth.

Signs and tests

All birthmarks should be evaluated by your health care provider. A biopsy of suspicious areas may be obtained for examination to determine if the cells have become cancerous. An MRI of the brain might be performed if the lesion is over the spine.

Treatment

Treatment consists of frequent examination to check for skin cancers and, when possible, surgery to remove the nevus. Skin grafting is done when necessary. Larger nevi may need to be removed in several stages.

Lasers and dermabrasion (link) can also be used to improve the appearance. However, using these techniques may not remove the entire birthmark, and may make it harder to diagnose skin cancer (melanoma).

Psychological treatment can help with the emotional impact of having a disfiguring disorder.

Expectations (prognosis)

Skin cancer (such as malignant melanoma and other types) may develop in up to 15% (1 out of 6) of people with larger or giant nevi, often in childhood. The risk is higher for larger or giant congenital nevi located on the back or abdomen.

Complications
  • Depression and other emotional problems (due to appearance)
  • Skin cancer (melanoma)

Rarely, bathing trunk nevi occur with a condition that causes a growth of pigment-producing cells in the head (leptomeningeal melanocytosis). Complications include:

Calling your health care provider

This condition is usually diagnosed at birth. Call for an appointment with your health care provider (or mention it during a well-baby exam) if your child has a large pigmented area anywhere on the skin.

References

Bett BJ. Large or multiple congential melanocytic nevi: Occurence of neurocutaneous melanocytosis in 1008 persons. J Am Acad Dermatol. 2006 May;54(5):767-777.

James WD, Berger TG, Elston DM, eds. Melanocytic Nevi and Neoplasms. Andrews' Disease of the Skin: Clinical Dermatology. 10th ed. Philadelphia, Pa: Saunders Elsevier; 2005:chap 30.

User Avatar

Wiki User

14y ago

What else can I help you with?

Related Questions

What is hairy nevus?

Darkly pigmented spots or moles which also feature a sometimes dense covering of hair. Resources: Cardinal Glennon; Read a Family Story of a Child with Giant Nevus


What is the synonym for the nevus?

Hello, I see you are asking "What is blue rubber bleb nevus?" Blue rubber bleb nevus syndrome (BRBNS), sometimes called Bean syndrome, is a rare congenital vascular anomaly in which malformed veins, or blebs, appear on the skin and surfaces of internal organs. These small, purple lesions are particularly common in the gastrointestinal (GI) tract. For more information, you can visit this URL - skincarehealthcenter. com/condition/blue-rubber-bleb-nevus/c/3854


What is the medical term meaning mole?

Nevus if it is noncancerous (it's also used for birthmarks) Nevus pigmentosus or macula


What does the spanish word nevus mean?

"Nevus" suena más a latín; en todo caso sería un apellido.


What is nevus in plural form?

nevi


What is the genus name for a mole?

Nevus


How is the word nevus pronounced?

as in nee-vhus


What is nevus flammeus?

A nevus flammeus is a red birthmark caused by capillary dilation. A quarter to half of all humans have a nevus flammeus, often at the back of the neck and referred to in layman's terms as a "stork bite."


What is a linear sequence?

Hello, I see you are asking "What is linear sebaceous nevus sequence?" Linear nevus sebaceous syndrome (LNSS) is a condition characterized by the association of a large, linear sebaceous nevus (type of birthmark) with a broad range of abnormalities that may affect every organ system, including the central nervous system (CNS). The nevus usually is located on the face, scalp, or neck. For more information, you can visit this URL - skincarehealthcenter. com/condition/linear-sebaceous-nevus-sequence/c/26254


What is plural of nevi?

Nevi is the already plural word of nevus.


What is a nevus in the antecubital area?

A nevus in the antecubital area is a mole or pigmented skin lesion located in the bend of the elbow. It is a common location for moles to develop and is usually harmless. However, any changes in size, shape, or color should be evaluated by a dermatologist to rule out skin cancer.


What are small skin growths that develop from melanocytes in the skin?

Nevus