Radiosurgery has become an accepted treatment option for vestibular schwannomas. Nevertheless, predictors of tumor control and treatment toxicity in current radiosurgery of vestibular schwannomas are not well understood. To generate new information on predictors of tumor control and cranial nerve toxicity of single-fraction radiosurgery of vestibular schwannomas, we conducted a single-instituti...

Neurofibromatosis type 2 [NF2; MIM # 101000] is an autosomal dominant disorder characterised by the occurrence of vestibular schwannomas (VSs), schwannomas of other cranial, spinal and cutaneous nerves, cranial and spinal meningiomas and/or other central nervous system (CNS) tumours (e.g., ependymomas, astrocytomas). Additional features include early onset cataracts, optic nerve sheath meningio...

BACKGROUND Schwannomas are mesenchymal neoplasms that arise from Schwann cells with low malignant potential. Schwannomas originating from the porta hepatis or intra-abdominal organs are extremely rare. To our knowledge, multiple schwannomas synchronously occurring in the porta hepatis, liver, and gallbladder have not been reported so far and we first report one in the present case. CASE SUMMA...

Schwannomas are rare benign neoplasms, arising from Schwann cells of the peripheral nerve sheath. Retroperitoneal location is very accounting for less than 3% cases. usually asymptomatic and incidentally found. A case a retroperitoneal schwannoma found, in 73 years-old women herein. The tumour was found on routine CT-scan patient asymptomatic. CT-guided biopsy compatible with schwannoma. Since ...

Schwannomas are encapsulated and slow grooving benign peripheral nerve tumors. They represent about one third of all benign primary spinal tumors. Most schwannomas occur as isolated lesions, but it could be possible to find a multiple localization involving one or more nerves. The presence of multiple schwannomas in a single patient is suggestive of a genetic predisposition to tumorigenesis and...

OBJECTIVES To determine if preoperative radiographic cross-sectional images can predict the nerve of origin of a parapharyngeal schwannoma and, specifically, whether it originates from the vagus nerve or the cervical sympathetic chain. DESIGN A retrospective review. SETTING Academic medical center. PATIENTS The study population comprised 12 patients who underwent surgical resection of sch...

Background: Our aim was to confirm the usefulness of the perilymphatic signal changes on T2-weighted (T2W) gradient-echo sequence to differentiate vestibular schwannomas from internal auditory canal (IAC) meningiomas, through a compartmental analysis of inner ear fluids signal intensity. Methods: A total of 203 patients with all criteria for typical vestibular schwannoma on T1-weighted contrast...

The majority of eighth cranial nerve tumors are acoustic schwannomas, with greater than 90% arising from the vestibular division within the internal auditory canal. Most originate near the porus acusticus at the gliai-Schwann cell interface. The minority of vestibular schwannomas arise at other locations along the nerve, such as within the vestibule or at the fundus of the internal auditory can...

OBJECTIVE To delineate the clinical phenotype, molecular basis, and implications for screening in patients and families with multiple schwannomas not generally involving the cranium. METHODS As part of a United Kingdom clinical and genetic study of type 2 neurofibromatosis (NF2) patients and families with multiple schwannomas who do not fulfil diagnostic criteria for NF2 have been identified....

Schwannomas are rare tumours that originate from the neural sheath and are usually located in the head and neck, extremities, and posterior mediastinum. Although 3% of schwannomas occur in the retroperitoneum, involvement of visceral organs is extremely uncommon. Schwannomas of the kidney are rare, with only a few reported cases. A 55-year-old woman was referred to our hospital with an abdomina...