small diameter or de novo, and evolution) can be used when evaluating suspicious lesions in children. In addition to histopathological examination, some lesions may also warrant additional tests to aid in diagnosis, including special stains, immunohistochemistry, and electron microscopy. Typically, the nevi that exist since childhood are harmless.

Differential diagnoses

Hypermelanotic nevi must be differentiated from other types of pigmented skin lesions, including:
* Lentigo simplex

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