Focal epithelial hyperplasia. Report of three cases from Nigeria, West Africa.

The first cases of focal epithelial hyperplasia from Nigeria and West Africa are presented. Although cases of this disease have been reported in Coloureds from South Africa, the three cases in this report represent the first in black Africans. The probability that the etiologic agent is a communicable agent, perhaps a virus, is reinforced by the clinical histories of the two related patients in this report.