Friday, 21 March 2008
Eccentric hyperpigmented nevus
A 27-year-old woman consulted for pigmented lesion on her back. The lesion had a darker area on the upper right quadrant.
Dermoscopy revealed a central globular pattern and a peripheral atypical reticular pattern with branched streaks.
Atypical reticular pattern (rectangle) and branched streaks (circle).
The lesion was excised and pathology revealed a compound nevus.
Atypical nevi with eccentric hyperpigmentation are atypical nevi of the utmost importance, the main differentiel diagnoses being melanomas in situ or early invasive melanomas.