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A 27-year-old woman consulted for pigmented lesion on her back. The lesion had a darker area on the upper right quadrant.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitZMhqktgEEvJnKgybncGlucYgSCp6rTN-paymwYmg8BNlp5PGMo9tRE0lRyAo5BPdx4GbKKfoOwtTzqIfYAur9_dP_IKPEDYVtFXQUP3HRziRJpIR0btWfT_iRnu670IkjQZGFl-L90E/s400/NNG2.jpg)
Dermoscopy revealed a central globular pattern and a peripheral atypical reticular pattern with branched streaks.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh206QGtBXT2zlGNYkqUVE-Vs2Fo93Igz7jV8RmJEF4pjIJdYstM4mZdZwxG8OXuAenCnxQRsG4_WaeXcrwLs76KpWBDBI06_TL9deNajS6vvq8vi2MazHn5zCOjXKTikzRWnR93sSdj2k/s400/NNG2b.jpg)
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.