FIGURE 52.3 Ranula Melanotic neuroectodermal tumor of infancy is a benign but rapidly growing osteolytic pigmented lesion of neural crest origin, most commonly presenting between and months of age ( Fig 52.4 ) It appears as a blue or black lobulated sessile mass, often arising from the maxilla Surgical treatment is usually curative Intraoral cases of the non-Langerhans cell histiocytosis juvenile xanthogranuloma have been reported, presenting as firm papular or nodular mucosal lesions In addition, neurofibromas associated with neurofibromatosis may be found in the oral cavity