Benign neoplasms of skin
Dysplastic or atypical nevi are pigmented lesions with irregular borders , colors ranging from red to brown to tan or black (less), typically flat but can be raised or palpable if large.
Large number to range to 100 nevi and strong family history of melanoma has high risk of developing to melanoma.
Halo nevi are pigmented nevi with surrounding white halo.
Unknown etiology, likely reactive against melanocytes.
Concern if multiple and adulthood; indicated for thorough skin indication.
Diagnosis clinical appears and dysplastic/atypical is confirmed on histology.
Treatment consist of elliptical entire pigmented excision