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Tuesday 13 November 2007

The wobble sign

This melanocytic nevus has a papillomatous central part with exophytic papillary structures.
When the dermoscope is pushed from site to site, we can see that the papillomatous nevus is moving: this is the wobble sign.
It is an extra sign to distinguish papillomatous dermal nevus from seborrheic keratosis which do not wobble.