نتایج جستجو برای: malignant schwannoma

تعداد نتایج: 216128  

Journal: :Cukurova Medical Journal 2023

Neoplasms in sinonasal cavity are dominated by epithelial type. Sinonasal osteomas common, benign, slow-growing, often asymptomatic neoplasms occurring mainly the frontal and ethmoid sinuses. Peripheral nevre sheath tumors soft tissue rarely encountered region. Schwannoma is a benign peripheral tumor. Here, we presented co-occurence of osteoma schwannoma. So far, infiltrated schwannoma region n...

Bita Geramizadeh, Mehrzad Pourjafar Negar Azarpira, Ramin Mardani Saeid Farokhi

Neurofibromatosis type 2 is an inherited disease. The main manifestation of the disease is the development of symmetric, non-malignant brain tumors in the region of the cranial nerve VIII usually as schwannoma. We report here a 20-year-old woman with primary intracranial malignant nerve sheath tumor located in the left cerebellopontine angle. Histologically, the tumor showed malignant spindle c...

Journal: :Journal of Korean Medical Science 2001
E. I. Son I. M. Kim S. P. Kim

We describe a rare case of malignant transformation in a vestibular schwannoma in a 33-yr-old woman. She presented herself with headache, tinnitus, and hearing loss and underwent posterior fossa explorations three times during the short period of 3 months. The clinicopathological features of the original tumor were typical of benign vestibular schwannoma. Despite a complete microsurgical excisi...

Journal: :The Laryngoscope 2011
Sami Tanbouzi Husseini Enrico Piccirillo Abdelkader Taibah Carlo T Paties Roberto Rizzoli Mario Sanna

OBJECTIVES/HYPOTHESIS A relation between conventional radiotherapy and the development of intracranial neoplasma is well known, but radiation-associated tumor following stereotactic radiotherapy of vestibular schwannoma is underestimated. In this article we will study this relation by doing a complete literature review on all the malignant intracranial tumors that appeared following radiosurger...

Journal: :Annals of Surgery 1970

Journal: :Journal of the Royal Society of Medicine 1991

Journal: :acta medica iranica 0
mohammad ali naraghi departments of anatomy and institute of cancer, school of medicine, tehran university of medical sciences, tehran, iran.

a 28-year-old man with neurofibromatosis type 1(nf1) presented with a tumor in the sciatic nerve and femoral nerve. the differential diagnosis of malignant peripheral nerve sheath tumor was based on clinical, radiological, and histological evidence. the tumor apparently originated in sciatic nerve at the posterior aspect of the left thigh. the lesion was resected totally without neural damage t...

2014
Francesca Longo Giuseppe Musumeci Gerardo Ferrara Claudia Trombatore Gaetano Magro

Cellular Schwannoma (CS) is a well-recognized morphological variant of schwannoma, which has been reported in many usual and unusual sites. We herein report a rare case of a bulky, retroperitoneal cellular schwannoma showing challenging radiological and morphological features. Due to large size and ill-defined margins at CT examination a malignant soft tissue tumor (sarcoma) was suggested. At h...

Journal: :HNO 2007
F Braunschweig M F Kramer G Assmann S Arbogast A Leunig

Schwannomas of the nasal cavity and paranasal sinuses are quite rare, with 4% occurring in this location. Most of them are benign and do not recur when totally removed by surgery. It is very important to distinguish between schwannoma and primary benign neurofibroma. Neurofibromas are lesions having the possibility for malignant transformation and recurrence. A case of schwannoma in the nasal c...

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