Abstract
Seventeen cases of malignant peripheral nerve tumors were investigated by electron microscopy and immunohistochemistry. Three had histopathological, histochemical, and ultrastructural features consistent with the diagnosis of neuroepithelioma, and 6 had malignant schwannoma. Seven poorly differentiated small cell tumors were tentatively classified according to histopathology as either Ewing’s sarcoma (2 cases), or undifferentiated small cell tumors (3 cases), liposarcoma (1 case), and extraskeletal chondrosarcoma (1 case), which showed neuroepithelial ultrastructural and histochemical markers such as dense core granules and positive reactivity for neuron-specific enolase (6 cases), S-100 protein (2 cases), and neurofilaments (3 cases) and with the antibody Leu 7 (2 cases). Five of these 7 poorly differentiated small cell tumors, which also showed schwannian features, may represent intermediate forms that link primitive peripheral neuroectodermal tumors to malignant schwannomas.
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Cerasoli S.: unpublished
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Lombardi, L., Cerasoli, S., Cattoretti, G., Pilotti, S. (1990). Ultrastructural and Immunohistochemical Modulations of Malignant Peripheral Nerve Tumors. In: Fenoglio-Preiser, C.M., Wolff, M., Rilke, F. (eds) Progress in Surgical Pathology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-12811-4_11
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DOI: https://doi.org/10.1007/978-3-662-12811-4_11
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