PubMed · 10869150
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P Gautam, S R Phadke. 2000. Fetal brain disruption sequence.. https://pubmed.ncbi.nlm.nih.gov/10869150/
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Melanotic neuroectodermal tumors of infancy are rare neoplasms that occasionally may involve the skull. Usually such lesions present as an anterior fontanelle mass that grows rapidly. Very rarely, skull lesions are located at different sites and have an indolent course, thus making the diagnosis more difficult. To illustrate this latter presentation, we present a case of a slowly growing melanotic neuroectodermal tumor of infancy located on the right lambdoid suture.
Diagnosis of craniosynostosis is based on clinical aspects but may be difficult in some cases where characteristic features are missing and radiographic imaging is necessary. In this context near-field high-frequency ultrasound has been used to evaluate the sonographic characteristics of synostotic sutures and its potential confirming the correct diagnosis. Sutures of 26 infants, aged 2-7 months, were investigated by ultrasound (Siemens Elegra, 7.5 MHz linear scanner). Sonographic features of synostotic sutures were correlated to CT imaging and compared to the sonographic and histopathological findings of normal cranial sutures. Hyperechogenic bridging of sutures with or without ridging were the characteristic aspects of synostotic sutures. All 26 patients could be reliable diagnosed showing partial (n = 21) or total fusion (n = 5) of one or more sutures consisting with craniosynostosis. Length of synostosis was identified exactly by sonography and imaging found to enable a classification of ultrastructural details of bony and soft tissue next to the synostotic suture. Ultrasound is a less expensive, nonradiating and easy-to-handle tool ensuring the diagnosis of craniosynostosis. Sonography offers the potential to be a standard investigation for infants with head deformities suspecting a suture pathology and has been therefore integrated in our craniofacial outpatient clinic as a daily routine method.
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