The Experts below are selected from a list of 273 Experts worldwide ranked by ideXlab platform

B.v. Savitr Sastri - One of the best experts on this subject based on the ideXlab platform.

John C Breneman - One of the best experts on this subject based on the ideXlab platform.

  • malignant squamous degeneration of a cerebellopontine angle Epidermoid Tumor case report
    Journal of Neurosurgery, 2002
    Co-Authors: Michael J Link, Paul L Cohen, John C Breneman, John M Tew
    Abstract:

    The authors present the case of a woman with a cerebellopontine angle (CPA) Epidermoid cyst that degenerated into a squamous cell carcinoma. Malignant degeneration of an Epidermoid cyst is an extremely rare occurrence. Malignant transformation must be considered in the differential diagnosis when new contrast enhancement on imaging studies and progressive neurological deficit are seen in a patient harboring an Epidermoid cyst. The patient initially presented with a 10-year history of left trigeminal neuralgia, subacute left-sided hearing loss, and with facial weakness of 3 weeks' duration. Initial magnetic resonance (MR) imaging revealed a left CPA mass, consistent with an Epidermoid. There was faint contrast enhancement where the Tumor was in contact with the lateral brainstem. A subtotal resection was performed. Histopathological findings were consistent with an Epidermoid Tumor. One year after initial presentation, the patient's neurological deficit had increased, and follow-up MR imaging demonstrated a large contrast-enhancing Tumor filling the left CPA and compressing the brainstem. At repeated surgery a squamous cell carcinoma arising from the previous Epidermoid was found. The patient was subsequently treated with external-beam radiotherapy and stereotactic radiosurgery. Her Tumor stabilized. Three years and 8 months after the patient's initial presentation, a new area of Tumor developed at the torcular Herophili. The patient died shortly thereafter. Malignant squamous degeneration is a rare cause of enhancement on MR images, as is progressive neurological deficit in a patient with an Epidermoid. The combination of subtotal resection, external-beam radiotherapy, and stereotactic radiosurgery may be useful for local Tumor control but the long-term prognosis is guarded.

  • malignant squamous degeneration of a cerebellopontine angle Epidermoid Tumor case report
    Journal of Neurosurgery, 2002
    Co-Authors: Michael J Link, Paul L Cohen, John C Breneman
    Abstract:

    ✓ The authors present the case of a woman with a cerebellopontine angle (CPA) Epidermoid cyst that degenerated into a squamous cell carcinoma. Malignant degeneration of an Epidermoid cyst is an extremely rare occurrence. Malignant transformation must be considered in the differential diagnosis when new contrast enhancement on imaging studies and progressive neurological deficit are seen in a patient harboring an Epidermoid cyst. The patient initially presented with a 10-year history of left trigeminal neuralgia, subacute left-sided hearing loss, and with facial weakness of 3 weeks' duration. Initial magnetic resonance (MR) imaging revealed a left CPA mass, consistent with an Epidermoid. There was faint contrast enhancement where the Tumor was in contact with the lateral brainstem. A subtotal resection was performed. Histopathological findings were consistent with an Epidermoid Tumor. One year after initial presentation, the patient's neurological deficit had increased, and follow-up MR imaging demonstrate...

Michael J Link - One of the best experts on this subject based on the ideXlab platform.

  • malignant squamous degeneration of a cerebellopontine angle Epidermoid Tumor case report
    Journal of Neurosurgery, 2002
    Co-Authors: Michael J Link, Paul L Cohen, John C Breneman, John M Tew
    Abstract:

    The authors present the case of a woman with a cerebellopontine angle (CPA) Epidermoid cyst that degenerated into a squamous cell carcinoma. Malignant degeneration of an Epidermoid cyst is an extremely rare occurrence. Malignant transformation must be considered in the differential diagnosis when new contrast enhancement on imaging studies and progressive neurological deficit are seen in a patient harboring an Epidermoid cyst. The patient initially presented with a 10-year history of left trigeminal neuralgia, subacute left-sided hearing loss, and with facial weakness of 3 weeks' duration. Initial magnetic resonance (MR) imaging revealed a left CPA mass, consistent with an Epidermoid. There was faint contrast enhancement where the Tumor was in contact with the lateral brainstem. A subtotal resection was performed. Histopathological findings were consistent with an Epidermoid Tumor. One year after initial presentation, the patient's neurological deficit had increased, and follow-up MR imaging demonstrated a large contrast-enhancing Tumor filling the left CPA and compressing the brainstem. At repeated surgery a squamous cell carcinoma arising from the previous Epidermoid was found. The patient was subsequently treated with external-beam radiotherapy and stereotactic radiosurgery. Her Tumor stabilized. Three years and 8 months after the patient's initial presentation, a new area of Tumor developed at the torcular Herophili. The patient died shortly thereafter. Malignant squamous degeneration is a rare cause of enhancement on MR images, as is progressive neurological deficit in a patient with an Epidermoid. The combination of subtotal resection, external-beam radiotherapy, and stereotactic radiosurgery may be useful for local Tumor control but the long-term prognosis is guarded.

  • malignant squamous degeneration of a cerebellopontine angle Epidermoid Tumor case report
    Journal of Neurosurgery, 2002
    Co-Authors: Michael J Link, Paul L Cohen, John C Breneman
    Abstract:

    ✓ The authors present the case of a woman with a cerebellopontine angle (CPA) Epidermoid cyst that degenerated into a squamous cell carcinoma. Malignant degeneration of an Epidermoid cyst is an extremely rare occurrence. Malignant transformation must be considered in the differential diagnosis when new contrast enhancement on imaging studies and progressive neurological deficit are seen in a patient harboring an Epidermoid cyst. The patient initially presented with a 10-year history of left trigeminal neuralgia, subacute left-sided hearing loss, and with facial weakness of 3 weeks' duration. Initial magnetic resonance (MR) imaging revealed a left CPA mass, consistent with an Epidermoid. There was faint contrast enhancement where the Tumor was in contact with the lateral brainstem. A subtotal resection was performed. Histopathological findings were consistent with an Epidermoid Tumor. One year after initial presentation, the patient's neurological deficit had increased, and follow-up MR imaging demonstrate...

Atilla Arslanoglu - One of the best experts on this subject based on the ideXlab platform.

  • Trigeminal neuralgia caused by intracranial Epidermoid Tumor: report of a case and review of the different therapeutic modalities.
    Pain physician, 2004
    Co-Authors: Bayram Cirak, Nejmi Kiymaz, Atilla Arslanoglu
    Abstract:

    Trigeminal neuralgia (TGN) is characterized by recurrent paroxysms of unilateral facial pain that typically is severe, lancinating, and activated with cutaneous stimulation. Paroxysms typically last for 1 to 2 seconds. Etiology includes compression of the trigeminal nerve by vascular structures, Tumors and multiple sclerosis plaques in the medulla spinalis. TGN is rather rare as a presenting symptom with intracranial Tumors. Epidermoid Tumors comprise 1% of all intracranial Tumors. The majority of Epidermoid Tumors are located at the pontocerebellar angle, the third ventricle, and the suprasellar region. Symptomatology is not different from other Tumors located at the same sites. Trigeminal neuralgia may be caused by Tumor compressing the nerve itself, an inflammatory response to the Epidermoid Tumor or vascular compression of the nerve. We describe the case of a 30-year old female presenting with right-sided facial pain. Her past history revealed multiple teeth extractions done to relieve facial pain. Radiological evaluation, including magnetic resonance imaging (MRI), showed a pontocerebellar angle (PCA) Epidermoid Tumor. TGN resolved completely after total Tumor resection. A temporary facial paralysis consequent to surgical removal of the Tumor improved 6 months postoperatively, and she remained painfree, without medications.

H.v. Satish Babu - One of the best experts on this subject based on the ideXlab platform.