"Atypical" blue nevus, "malignant" blue nevus, and "metastasizing" blue nevus: a critique in historical perspective of three concepts flawed fatally.
Mones JM, Ackerman AB.
Am J Dermatopathol. 2004 Oct;26(5):407-30. doi: 10.1097/00000372-200410000-00012.
PMID:15365375
Malignant blue nevus: Characterization of US epidemiology and prognostic factors of a rare neoplasm with aggressive clinical course using the Surveillance, Epidemiology, and End Results Program database.