Malignant neuroectodermal tumor with melanocytic and rhabdomyoblastic differentiation
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منابع مشابه
Malignant neuroectodermal tumor with melanocytic and rhabdomyoblastic differentiation
Malignant melanoma can metastasize widely and vary significantly in its histological appearance; it rarely presents as a deep-seated mass without an obvious primary site elsewhere. Malignant peripheral nerve sheath tumor (MPNST) is a high-grade sarcoma characterized by conventional and epithelioid subtypes. MPNST can demonstrate heterologous differentiation, usually in the form of osteosarcomat...
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Malignant peripheral nerve sheath tumors (MPNST) constitute a rare variety of soft tissue sarcomas thought to originate from Schwann cells or pluripotent cells of the neural crest. Malignant triton tumor (MTT), a very rare, highly aggressive soft tissue tumor, is a subgroup of MPNST and is comprised of malignant Schwann cells coexisting with malignant rhabdomyoblasts. We herein report the case ...
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A 54-year-old woman presented with intractable perianal, bilateral buttock, and radiating thigh/calf pain. An MRI scan showed an intradural, contrast-enhancing, ovoid mass in the cauda equina region at L1-L2. At laminectomy, the ovoid mass arose from a nerve root and, intact, was gross totally resected. Histologically, the dominant pattern was that of schwannoma. One year thereafter, the sympto...
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Cases of cerebral neuroblastoma or supratentorial primitive neuroectodermal tumor with malignant gliomatous components are relatively uncommon. Less frequent is the combination of these 2 elements with a mesenchymal component. This is a case report of a lipomatous supratentorial primitive neuroectodermal tumor with glioblastomatous differentiation occurring in a 48-year-old woman. She presented...
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Unusual tissue elements may be encountered occasionally in malignant nerve sheath tumors. For instance, cartilaginous differentiation is seen in 11 %, the foci of rhabdomyosarcoma in 15%, and areas showing bone formation may be seen in 4% of these tumors (Warner et a/., 1983). Rarely is more than one type of heterologous element discovered in the same tumor (Agostino et a/., 1963). Besides the ...
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ژورنال
عنوان ژورنال: Rare Tumors
سال: 2009
ISSN: 2036-3613,2036-3613
DOI: 10.4081/rt.2009.e26