differential diagnoses of pigmented skin lesions, by relative incidence and malignancy potential, including<unk> , Reed or spindle nevus" at top right. On histopathology,<unk>  nevi characteristically have vertically arranged nests of nevus cells that have both a spindled and an epithelioid morphology. Apoptotic cells may be seen at the dermoepidermal junction. The main histologic differential diagnoses are pigmented spindle cell nevus and malignant melanoma. Treatment== Surgical removal is usually performed, even though it is benign.
Spitz nevus
Halo nevus
Acral nevus
Woolly hair nevus
Becker's nevus
Blue nevus
Ink spot lentigo
Riehl melanosis