1/152. Central neurilemmoma of the jaws. review of literature and case report.Neurilemmomas presenting as primary central bone tumors are extremely rare. Only 21 cases have been reported to have arisen in the jaws; all except for one have occurred in the mandible. The majority of these have been associated with the inferior dental nerve. A case of a central neurilemmoma arising in the anterior mandible is reported. Its probable origin is from one of the alveolar branches of the incisive nerve--an unusual site in the mandible. The radiographic features include expansion of cortical bone, resorption of roots of teeth, the presence of lace-like bony septa and a spotty calcification within the tumor. The treatment and the prognosis are briefly discussed.- - - - - - - - - - ranking = 1keywords = mandible, jaw (Clic here for more details about this article) |
2/152. E.N.T. manifestations of Von Recklinghausen's disease.Von Recklinghausen's Disease (VRD) is a neurocutaneous, systemic disease characterized by CNS tumors and disorders, cafe-au-lait spots, generalized cutaneous neurofibromata, skeletal deformities, and somatic and endocrine abnormalities. It is an autosomal dominant, hereditary disorder found in approximately 1:2500 to 3300 births. There are many manifestations of this disease in the head and neck region of interest to the otolaryngologist. case reports of three patients with multiple ENT involvements are detailed. A review of the literature is presented with a brief discussion of diagnosis and treatment. The most common intracranial tumor in the adult is the acoustic neuroma, usually bilateral, while in the child it is the astrocytoma. A defect in the sphenoid bone is common and may produce temporal lobe herniation into the orbit causing pulsatile exophthalmos. Involvement of the facial bones usually causes radiolucent defects secondary to neurofibromata within nerve pathways, and a variety of asymmetrical changes, especially within the mandible. "elephantiasis" of the face is a hypertrophy of the soft tissues overlying a neurofibroma, often quite extensive and disfiguring. Laryngeal and neck involvement may compromise the airway and early and repeated surgical intervention is required. The over-all malignancy rate approaches 30%, indicating that the patient with VRD may be predisposed to developing a malignancy. There appears to be an increased surgical risk in these patients, with some demonstrating abnormal responses to neuromuscular blockade.- - - - - - - - - - ranking = 0.32483843460174keywords = mandible (Clic here for more details about this article) |
3/152. A case of laryngeal neurinoma with neurofibromatosis 2.We present a case of a laryngeal neurinoma in a patient with neurofibromatosis 2. A 39-year-old man presented to our hospital with multiple complaints including progressive bilateral hearing loss, dizziness, dyspnea, dysphagia, and a 9-year history of right lower leg weakness. magnetic resonance imaging demonstrated multiple lesions including bilateral cerebellopontine angle tumors, a foremen magnum tumor, multiple tumors of the spinal cord, a laryngeal tumor, and several retrocervical tumors. Fiberoptic laryngoscopy revealed a large submucosal supraglottic tumor. The laryngeal tumor was visualized through microlaryngoscopy and excised with a KTP laser directed through a quartz fiber.- - - - - - - - - - ranking = 0.0089296188507903keywords = lower (Clic here for more details about this article) |
4/152. A skull base extradural hypoglossal neurilemmoma resected via an extended posterolateral approach.The case of a 43-year-old man with a right skull base hypoglossal neurilemmoma excised via the extended posterolateral approach is presented. There is only one previous case of hypoglossal neurilemmoma in the literature. The surgical technique described is a new approach to the posterior skull base involving a suboccipital craniectomy, mastoidectomy and the removal of the lateral process of the atlas. It provides an inferior approach to the jugular foramen and hypoglossal canal that allows the lower cranial nerves to be identified as they exit from their skull base foramina. In the discussion we compare this technique to other surgical approaches previously described for access to the region of the jugular foramen.- - - - - - - - - - ranking = 0.0089296188507903keywords = lower (Clic here for more details about this article) |
5/152. Pleomorphic hyalinized angiectatic tumor of soft parts.Pleomorphic hyalinized angiectatic tumor of soft parts is a recently described neoplasm that most commonly affects the lower extremities. It is locally aggressive but has not been known to metastasize. This article presents a case of a softball-sized tumor on the dorsum of the foot that was identified as pleomorphic hyalinized angiectatic tumor of soft parts. Previously, it would have been misdiagnosed and treated as either a neurilemoma or a malignant fibrous histiocytoma.- - - - - - - - - - ranking = 0.0089296188507903keywords = lower (Clic here for more details about this article) |
6/152. Stereotactic radiosurgery for jugular foramen schwannomas.BACKGROUND: Jugular foramen schwannomas pose difficult management problems because of the surgical risk of lower cranial neuropathy. The indications and results of stereotactic radiosurgery are not well documented. methods: We reviewed our 10-year experience in the management of 17 patients who had jugular foramen schwannomas managed with the gamma knife. Thirteen patients previously had undergone surgery (range, 1-6 resections). Four patients had multiple cranial nerve deficits before microsurgical resection; 12 developed multiple lower cranial nerve palsies after resection. Four patients underwent radiosurgery based on imaging criteria alone. Conformal dose planning (tumor margin dose of 12-18 Gy) successfully encompassed the irregular tumor volumes in all patients. RESULTS: Follow-up varied from 6 to 74 months. Tumor size decreased in eight patients, remained stable in eight, and increased in one patient during the average follow-up interval of 3.5 years. Six patients improved and 10 others retained their preradiosurgery clinical status. One patient had an increase in tumor size and clinical deterioration 6 months after radiosurgery and underwent microsurgical resection. No patient developed new cranial nerve or other neurological deficits after radiosurgery. CONCLUSIONS: We believe that gamma knife radiosurgery is an effective alternative to microsurgical resection for patients who have small tumors and intact lower cranial nerve function. It is also effective for patients who have residual or recurrent tumors after microsurgical resection.- - - - - - - - - - ranking = 0.026788856552371keywords = lower (Clic here for more details about this article) |
7/152. association of lower cranial nerve schwannoma with spinal ependymoma in ? NF2.A 15 year old male, who had earlier been operated for intraspinal intramedullary ependymoma, subsequently developed a right cerebello pontine (CP) angle mass. A diagnosis of right CP angle ependymoma was considered, in view of established histology of previously operated spinal lesion. Histopathological examination of the well defined extra-axial mass, which was attached with ninth cranial nerve, however revealed a schwannoma. A diagnosis of Neurofibromatosis-2 (NF2) is strongly suspected, because of well established fact, that the spinal ependymomas may have association with lower cranial nerve schwannomas in NF2. Cranial and spinal MRI screening for early diagnosis of associated, asymptomatic lesions, in suspected cases of NF2, particularly in children, is recommended.- - - - - - - - - - ranking = 0.044648094253952keywords = lower (Clic here for more details about this article) |
8/152. neurilemmoma of the mandible.Intraosseous neurilemmoma is rare, representing less than 1% of benign primary bone tumors. The site most commonly involved is the mandible. We report on a neurilemmoma of the mandible in a 30-year-old woman. A panoramic radiograph of the mandible showed a well-defined unilocular osteolytic lesion with a thin uniform sclerotic margin located in the body of the mandible. The CT scan confirmed a well-defined osteolytic lesion with thinning of the cortex of the body of the left side of the mandible. Histologically, the lesion was a moderately cellular neoplasm with distinct palisading and numerous Verocay bodies. Ultrastructurally, the cytoplasmic membranes were distinct and coated by amorphous bands of basal lamina. Complete excision was achieved by removing the tumor from the inferior alveolar nerve.- - - - - - - - - - ranking = 2.9235459114157keywords = mandible (Clic here for more details about this article) |
9/152. Neurologic disease presenting as chronic pelvic pain.Neurologic disease as a cause of chronic pelvic pain may be more common than previously reported. We report three cases wherein patients with complaints of pelvic pain were subsequently found to have neurologic disease involving the lumbosacral spine. In all three cases, the presenting features were complaints of cyclic or noncyclic lower abdominal pain attributed to endometriosis, pelvic inflammatory disease, or uterine fibroids. When conventional therapies failed to resolve the pain, magnetic resonance imaging (MRI) of the lumbosacral spine showed a neoplasm in one patient and disk herniation in two patients. Evolving lumbar disk disease or intradural neoplasms in the upper lumbar area can produce symptoms interpreted as pelvic pain. Symptoms consistent with radiculopathy occurred late in the course of each of the three cases reported.- - - - - - - - - - ranking = 0.0089296188507903keywords = lower (Clic here for more details about this article) |
10/152. Surgical treatment of locally recurrent malignant schwannoma of the lower leg.This report describes a case of locally recurrent limb malignant schwannoma in a 74-year-old patient. The light microscopy and immunohistochemical findings are presented and current methods of surgical treatment reviewed. We describe treatment using wide local excision with frozen section control of the marginal nerves and present a 3-year follow-up.- - - - - - - - - - ranking = 0.035718475403161keywords = lower (Clic here for more details about this article) |
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