MELANOTIC PROGONOMA OF THE MAXILLA.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
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Melanotic neuroectodermal tumour of infancy is an uncommon neoplasm that usually occurs in children aged one year or less. Difficulty in deciding the cellular origin of this tumour has led to numerous names, including congenital melanocarcinoma, melanotic epithelial odontoma, melanotic ameloblastoma, and retinal anlage tumour. Electron microscopy and histochemical studies, however, have now established the neural crest origin. The most frequent site of occurrence is the maxilla followed by the skull, the brain and the mandible. The genital organs are the most frequent extracranial site. We present two cases of melanotic neuroectodermal tumour of infancy arising in the maxilla.
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We describe CT and MR findings in a 23-month-old infant with a melanotic neuroectodermal tumour of the pineal gland. The tumour has been stereotactically biopsied and surgically resected. The pathological diagnosis was made on the resected piece. Embryology of the pineal gland and the histology of melanotic neuroectodermal tumour of infancy are discussed.
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A case of a congenital melanotic neuroectodermal tumour in a male neonate is described. Management consisted of wide excision of the tumour as opposed to simple enucleation.
An unusual case of a melanotic neuroectodermal tumour of the occipital squama, which underwent malignant transformation in a nine-month-old infant is reported and pertinent literature reviewed.