title: Co-existing basal cell carcinoma and blue nevus in an African-American woman.
abstract: A 67-year-old African-American woman presented with an enlarging darkly pigmented plaque on her scalp. Histopathologic examination revealed a basal cell carcinoma juxtaposed to a blue nevus. Interestingly, the most common types of cutaneous collision tumors include melanocytic nevus and basal cell carcinoma. Whether these combinations are simply because of chance or may have a pathophysiologic mechanism is contentious. This is the first documented case of a basal cell carcinoma co-existing alone with a blue nevus.
authors: Department of Dermatology, Geffen School of Medicine, University of California, Los Angeles, CA, USA. j.litak@ucla.edu
authors: Jason
authors: J
authors: Litak
authors: Daniel
authors: D
authors: Behroozan
authors: Scott
authors: S
authors: Binder
mesh_terms: D001741:Black or African American; D000368:Aged; D002280:Basal Cell Carcinoma / Q000473:pathology*; D005260:Female; D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D018329:Nevus, Blue / Q000473:pathology*; D012535:Scalp / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*