melanoameloblastoma

melanoameloblastoma /mel′ənō·am′əlōblastō″mə/ , a benign neoplasm appearing as a blue-black lesion on the anterior maxilla of infants. The growth is of neuroectodermal origin and consists of small round undifferentiated tumor cells and larger melanin-producing cells. Also called melanotic neuroectodermal tumor of infancy.