A case of malignant blue nevus occurring on the foot of a Negro woman is reported. Because of the skin color, the depth of the lesion, and the small amount of pigment within the tumor, the neoplasm was not clinically pigmented. The patient died of widespread metastatic disease 7½ years after incomplete surgical excision of the primary tumor, and approximately 14½ years after the primary lesion was first noted. Heretofore undescribed microscopic findings are presented which lend further support to the theory of the neural origin of these tumors.
KWITTKEN J, NEGRI L. Malignant Blue NevusCase Report of a Negro Woman. Arch Dermatol. 1966;94(1):64-69. doi:10.1001/archderm.1966.01600250070014