Can congenital moles be cancerous?

What does a congenital nevus look like?

A congenital nevus looks like a round or oval-shaped patch of colored skin and is usually raised. They can be either a single color or multi-colored. They can vary in size from a tiny spot to something that covers a large part of your body. In some cases, they might have hair growing out of them.

What are congenital moles called?

Moles, also called “melanocytic nevi,” are common in newborns and infants (about 1 percent). If they are seen at birth or develop during the first 1-2 years of life they are called congenital melanocytic nevi. While most of these moles are small, some may be very large.

What causes giant congenital nevus?

Giant congenital nevi can occur in people of any racial or ethnic background and on any area of the body. They result from localized genetic changes in the fetus that lead to excessive growth of melanocytes, the cells in the skin that are responsible for skin color.

When should I worry about a mole on my child?

If a mole bleeds without reason, however, it should be checked. A mole that looks like an open sore is also worrisome. Bleeding or a break in the skin can be a sign of melanoma. Bottom line: If your child has a mole that starts to bleed or looks like an open sore, a dermatologist should examine the mole.

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Are dark black moles cancerous?

Darkening is one possible sign that a mole is becoming cancerous and could be a melanoma.

What do moles look like when cancerous?

Border – melanomas usually have a notched or ragged border. Colours – melanomas will usually be a mix of 2 or more colours. Diameter – most melanomas are usually larger than 6mm in diameter. Enlargement or elevation – a mole that changes size over time is more likely to be a melanoma.

Is melanocytic nevus benign or malignant?

Melanocytic nevi are benign neoplasms or hamartomas composed of melanocytes, the pigment-producing cells that constitutively colonize the epidermis.