• Blue nevus may rarely appear in plaque form. It seems to be a benign and asymptomatic lesion, but because of its rarity, no definite prognosis can be given. Only through reporting of additional cases and their follow-up will the prognosis become clear.
(Arch Dermatol 112:1127-1128, 1976)
Joanne L. Pittman, Benjamin K. Fisher. Plaque-Type Blue Nevus. Arch Dermatol. 1976;112(8):1127–1128. doi:10.1001/archderm.1976.01630320033008