Giant congenital nevus
Alternate Names : Congenital giant pigmented nevus, Giant hairy nevus, Giant pigmented nevus, Bathing trunk nevus, Congenital melanocytic nevus - large
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.
Overview, Causes, & 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.
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