Subject(s)

Hair Diseases/congenital , Head and Neck Neoplasms/diagnosis , Nevus/diagnosis , Skin Neoplasms/diagnosis , Child, Preschool , Hair Diseases/diagnosis , Head and Neck Neoplasms/congenital , Humans , Male , Nevus/congenital , Scalp/abnormalities , Skin Neoplasms/congenital