نتایج جستجو برای: nerve sheath neoplasms

تعداد نتایج: 658028  

Journal: :International Journal of Research in Medical Sciences 2022

Background: Soft tissue tumours are more diverse and heterogenous group of rare tumours. Sarcomas comprise <1% adult cancers which pose a great challenge in diagnosis treatment. The aim the study is to compare incidence evaluate type, sex predilection, anatomical location size all soft tumours.Methods: A prospective reported department Pathology, Thanjavur Medical College Hospital from July ...

Journal: :AJNR. American journal of neuroradiology 1982
D L Daniels A L Williams A Syvertsen W E Gager G J Harris

Optic nerve sheath meningiomas and optic nerve gliomas can be difficult to differentiate by computed tomography (CT). Three patients with optic nerve sheath meningiomas were studied with a CT/T 8800 scanner with 1.5-mm-thick axial sections and intravenous contrast material. In each case, an abnormal optic nerve sheath was identified by CT. A soft-tissue mass arose from one side of the sheath in...

2010
Joseph Ward Vyomesh Bhatt Neal Barnard

We present the case of a malignant peripheral nerve sheath tumour (MPNST) that developed on the upper lip of an 86 year old woman. MPNSTs are highly aggressive sarcomas that very rarely occur in the face. We know of no other reported cases of a malignant peripheral nerve sheath tumour arising from the upper lip.

Journal: :acta medica iranica 0
h. soltanghoraiee m. jamali zavarehii m.a. broomand

breast cancer is common and is considered second cause of cancer related mortality in females. regarding importance of breast cancer, more investigation in this field is recommended. for many years investigators believed that neoplasms were not innervated but new findings have proved otherwise. this descriptive study was carried out to compare number of nerve fibers in benign, malignant and nor...

Journal: :The American journal of surgical pathology 2015
Markku Miettinen Peter A McCue Maarit Sarlomo-Rikala Wojciech Biernat Piotr Czapiewski Janusz Kopczynski Lester D Thompson Jerzy Lasota Zengfeng Wang John F Fetsch

Sox10 transcription factor is expressed in schwannian and melanocytic lineages and is important in their development and can be used as a marker for corresponding tumors. In addition, it has been reported in subsets of myoepithelial/basal cell epithelial neoplasms, but its expression remains incompletely characterized. In this study, we examined Sox10 expression in 5134 human neoplasms spanning...

2010
Kalpalata Tripathy Rabinarayan Mallik Aparajita Mishra Debiprasad Misra Niranjan Rout Padmalaya Nayak Sagarika Samantray Jayshree Rath

Malignant peripheral nerve sheath tumor with rhabdomyoblastic differentiation, malignant triton tumor, has a rare incidence. We report such a case in a 40-year-old male who presented with a mass over the buttock. He was a previously diagnosed case of neurofibroma in the same area. Histomorphology supported by immunostaining with S-100 protein confirmed the diagnosis. Malignant triton tumor has ...

ژورنال: Anatomical Sciences Journal 2010
Ayoubian, Mahmoud, Korouji , Seyed Morteza,

A rare variant of ansa cervicalis was discovered during routine dissection of the neck in a male cadaver. The superior root of the Ansa cervicalis was formed by the C1 ventral ramus. It fused with the vagus nerve in place of the hypoglossal nerve without any connection and descended into the carotid sheath with it. Then, C1 ventral ramus formed from the sheath and joined the inferior root from ...

Journal: :AJNR. American journal of neuroradiology 2007
F J Wippold M Lubner R J Perrin M Lämmle A Perry

Histologic patterns of cellular architecture often suggest a tissue diagnosis. Distinctive histologic patterns seen within the peripheral nerve sheath tumor schwannoma include the Antoni A and Antoni B regions. The purpose of this report is to review the significance of Antoni regions in the context of schwannomas.

Journal: :Medicina oral, patologia oral y cirugia bucal 2009
Krishnaraj Subhashraj Subramanian Balanand Subhashraj Pajaniammalle

Schwannoma is an intraoral rare, benign neoplasm derived from the nerve sheath of peripheral nerves. "Ancient schwannoma" shows histopathological features, such as degenerative changes and atypical nuclei, and may easily be confused with malignant neoplasms. Ancient schwannoma of the head and neck region is relatively uncommon and very few cases had been reported in the oral cavity. We present ...

2014
Luis Ronan Marquez Ferreira de Souza Harley De Nicola Rosiane Yamasaki José Eduardo Pedroso Osíris de Oliveira Camponês do Brasil Hélio Yamashita

Schwannomas are benign nerve sheath tumors composed of Schwann cells, which normally produce the insulating myelin sheath covering peripheral, cranial and autonomic nerves. Twenty-five to forty-five percent of all schwannomas occur in the head and neck region, but location of such tumors in the larynx is rarely observed. The present report is aimed at describing a clinical case of laryngeal sch...

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