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November 1967

Basal Cell Epithelioma and Nevus PigmentosusTheir Simultaneous Occurrence

Author Affiliations

Portland, Ore

From the Division of Dermatology, University of Oregon Medical School, Portland.

Arch Dermatol. 1967;96(5):520-523. doi:10.1001/archderm.1967.01610050042004

Two instances of basal cell epitheliomas and pigmented nevus occurring simultaneously in the same lesion are reported. No explanation other than that of coincidence is offered. However, it is apparent that ulceration or enlargement of a pigmented nevus may be caused by a coexisting basal cell epithelioma. Conversely, the occurrence of pigmentation in basal cell epitheliomas may be due to a coexisting pigmented nevus rather than to symbiotic melanocytes.