A case of congenital ectopic nails on bilateral little fingers

Congenital ectopic nails are a rare anomaly, but we observed a case of a 43-year-old woman with ectopic nails at the tips of her bilateral little fingers. On X-ray, the distal phalanx of the each little finger appeared depressed. We surgically removed the ectopic nails. One year and 6 months later, no relapse had occurred. The histopathological examination revealed undifferentiated nail tissue including nail, nail matrix, and nail epithelium.