نتایج جستجو برای: nerve sheath tumors
تعداد نتایج: 347112 فیلتر نتایج به سال:
Received February 2007 Accepted August 2007 INTRODUCTION There is a broad spectrum of neurogenic tumors involving the abdominal organs. These tumors can be classified as those originating from the ganglion cells (ganglioneuroblastoma, ganglioneuroma, neuroblastoma), paraganglionic system (pheochromocytoma, paraganglioma), and nerve sheaths (neurilemmoma, malignant nerve sheath tumor, neurofibro...
Nerve sheath myxoma (neurothekeoma) are rare benign nerve sheath tumors, usually arising in the skin of the head and neck region and upper extremities in young females. To the best of author's knowledge only two cases of intracranial neurothekeoma have been published in the English literature. These tumors were located in the parasellar area and in middle cranial fossa. This is ...
1 Professor of Surgical Oncology, 2 Associate Professor of Surgical Oncology 3 Assistant Professor of Surgical Oncology, 4 Resident Surgical Oncology Department of Surgical Oncology, Centre for Oncology, Government Royapettah Hospital & Kilpauk Medical College, Chennai, India, Pincode 600014 Corresponding Author Prof Subbiah Shanmugam MS MCh Address: No.110, Courtyard, Ramnagar, 3 rd Main stree...
Malignant peripheral nerve sheath tumor (MPNST) is the leading cause of mortality in patients with neurofibromatosis type 1. In 2002, an MPNST consensus statement reviewed the current knowledge and provided guidance for the diagnosis and management of MPNST. Although the improvement in clinical outcome has not changed, substantial progress has been made in understanding the natural history and ...
background :there is not any data available about the effect of high bar pressure condition on intracranial pressure. in this study, the effect of diving on the optic nerve and sheath diameters as non-invasive markers of intracranial pressure has been investigated. methods : twenty professional male divers from twenty one volunteers were chosen for this cross-sectional study. only one person ...
Aryl hydrocarbon receptor (AHR) is a ligand-activated transcription factor involved in xenobiotic metabolism. Plexiform neurofibromas (PNFs) can transform into malignant peripheral nerve sheath tumors (MPNSTs) that are resistant to existing therapies. These tumors are primarily composed of Schwann cells. In addition to neurofibromatosis type 1 (NF1) gene inactivation, further genetic lesions ar...
Hemangioblastomas are World Health Organization (WHO) grade I tumors of uncertain histologic origin. These central nervous system tumors are most often found in the posterior fossa, brainstem, and spinal cord. There are fewer than 20 reported cases of optic nerve hemangioblastomas in the literature. We present a patient with visual decline found to have a mass arising from within the posterior ...
Malignant peripheral nerve sheath tumor (MPNST) is a rare nerve sheath tumor derived from Schwann cells or pleuripotent cells of neural crest. Neurogenic tumors make about 10-20% of all mediastinal tumors. Incidence of MPNST is 0.001% in general population and 0.16% in patients with neurofibromatosis I (NF I). We report a case of 60 year female presenting with progressive cough and breathlessne...
Approximately 30-50% of individuals with Neurofibromatosis type 1 develop benign peripheral nerve sheath tumors, called plexiform neurofibromas (PNFs). PNFs can undergo malignant transformation to highly metastatic malignant peripheral nerve sheath tumors (MPNSTs) in 5-10% of NF1 patients, with poor prognosis. No effective systemic therapy is currently available for unresectable tumors. In tumo...
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