1995
DOI: 10.3171/jns.1995.83.1.0145
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Melanotic neuroectodermal tumor of infancy: a molecular approach to diagnosis

Abstract: A case of melanotic neuroectodermal tumor of infancy arising from the transverse sinus is presented. The tumor was located on the outer surface of the dura and extended extracranially through the occipitomastoid suture. Two cell populations were observed: pigmented melanocyte-like cells and small neuroblast-like cells. Ultrastructural analysis revealed epithelial tumor cells and melanosomes at various stages. Expression of melanotransferrin messenger RNA transcripts within the tumor tissue was observed using a… Show more

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Cited by 35 publications
(28 citation statements)
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“…On MRI scans, these lesions tend to be hyperintense on T1 and hypointense on T2 (21,22,24). Despite these characteristic findings, imaging will seldom be diagnostic and tissue biopsy is therefore required.…”
Section: Discussion and Literature Reviewmentioning
confidence: 99%
See 1 more Smart Citation
“…On MRI scans, these lesions tend to be hyperintense on T1 and hypointense on T2 (21,22,24). Despite these characteristic findings, imaging will seldom be diagnostic and tissue biopsy is therefore required.…”
Section: Discussion and Literature Reviewmentioning
confidence: 99%
“…Computed tomography imaging typically reveals a welldemarcated, hyperdense lesion with contrast enhancement and hyperostosis of adjacent bone (21)(22)(23)(24). On MRI scans, these lesions tend to be hyperintense on T1 and hypointense on T2 (21,22,24).…”
Section: Discussion and Literature Reviewmentioning
confidence: 99%
“…Many reports of skull involvement [4,5,8,12,17,18,19,20,21] have appeared in the literature, and, in fact, extension into the brain parenchyma has been reported [13,22]. Reports also show that tumors in the skull arise from sutures [5,6], with the anterior fontanelle [8,12,23,24,25], temporoparietal [21] and frontotemporosphenoid [26] regions all being potential sites of involvement.…”
Section: Discussionmentioning
confidence: 99%
“…First described in 1918 by Krompecher as congenital melanocarcinoma, the entity has been called melanotic prognoma, melanotic ameloblastoma, atypical melanoblastoma and melanocytic neuroectodermal tumor, among others [1,2]. MNTI is of neural-crest, ectodermal origin and is pigmented secondary to melanin content [3,4,5]. While most commonly associated with the facial bones, including the maxilla and mandible, select cases have been described in the skull [6].…”
Section: Introductionmentioning
confidence: 99%
“…E l e c t ron microscopic and histochemical studies have now established that these tumors pro b a b l y originate from neural crest cells because of morphological similarities between tumor cells and melanocytes and between tumor cells and neuroblasts 14 . There are reports of high serum levels of a d renaline, noradrenaline and vanillylmandelic acid that further corroborate this hypothesis.…”
Section: First Described By Krompecher In 1918mentioning
confidence: 99%