| 释义 |
melanotic neuroectodermal tumor of infancy
mel·a·not·ic neu·ro·ec·to·der·mal tu·mor of in·fan·cya benign neoplasm of neuroectodermal origin that most often involves the anterior maxilla of infants in the first year of life. It presents clinically as a rapidly growing blue-black lesion producing a destructive radiolucency; histologically, it is characterized by small, round, undifferentiated tumor cells interspersed with larger polyhedral melanin-producing cells arranged in an alveolar configuration. Synonym(s): melanoameloblastoma, pigmented ameloblastoma, pigmented epulis, progonoma of jaw, retinal anlage tumormel·a·not·ic neu·ro·ec·to·der·mal tu·mor of in·fan·cy (mel'ă-not'ĭk nū'rō-ek'tō-dĕr-măl tū'mŏr in'făn-sē) A benign neoplasm of neuroectodermal origin that most often involves the anterior maxilla of infants in the first year of life; presents clinically as a rapidly growing blue-black lesion producing a destructive radiolucency; histologically, characterized by small, round, undifferentiated tumor cells interspersed with larger, polyhedral, melanin-producing cells arranged in an alveolar configuration. AcronymsSeeMNTI |