Malignant peripheral nerve sheath tumour, gross specimen

Numéro d’image : 13733545
Malignant peripheral nerve sheath tumour, gross specimen
Malignant peripheral nerve sheath tumour, gross specimen. Malignant peripheral nerve sheath tumour (MPNST) is a high-grade sarcoma that shows differentiation along one of the nerve sheath elements such as Schwann cell, perineural cell, or fibroblast. They make up 5% to 10% of all soft tissue sarcomas. About 50% arise de novo; the remainder occur in the setting of neurofibromatosis 1 (NF1). They usually occur in adults along one of the major nerve trunks such as sciatic nerve, brachial plexus, and sacral plexus. MPNSTs are large, fleshy tumours and commonly show areas of necrosis and haemorrhage. MPNSTs have a tendency to local recurrences (about 40% of cases) as well as distant metastases (40% to 60% of cases) after resection. This gross specimen photograph show wide local excision of a large MPNST (measuring 14 cm in greatest dimension) that arose from sciatic nerve trunk in a middle-aged patient. Note the areas of haemorrhage and necrosis.
Licence : Droits gérés
Crédit: Science Photo Library / WEBPATHOLOGY
Taille de l’image : 4095 px × 3200 px
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Property Release : Non requis
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