Giant congenital nevus

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Congenital nevus on the abdomen

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

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

• Brown to bluish-black color
• Hair
• Regular or uneven borders
• Small satellite areas (maybe)
• Smooth, irregular, or wart-like skin surface

Nevi are commonly found on the upper or lower parts of the back or the abdomen. They may also be found on the:

• Arms
• Legs
• Mouth
• Mucus membranes
• Palms or soles

All birthmarks should be evaluated by your health care provider. A skin biopsy may be taken for examination to determine whether the cells have become cancerous.

An MRI of the brain might be performed if the skin lesion is over the spine. There also may be problems in the brain when a giant nevus is found on the spine.

Review Date: 10/08/2010
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine. Also reviewed by Kevin Berman, MD, PhD, Atlanta Center for Dermatologic Disease, Atlanta, GA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).

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