‘Atypical’ Blue Nevus – a Benign Variant of Cellular Blue Nevus

Abstract

Three cases of atypical blue nevus presented almost identical histological findings differing from both benign cellular blue nevus and malignant blue nevus or malignant melanoma, and suggesting malignancy. Long-term follow-up (in 1 case 19 yr) indicates that this pigmented tumor is a benign variant of blue nevus.