PubMed Central (PMC3 - NLM DTD)
(2,081,148 recursos)
Archive of life sciences journal literature at the U.S. National Institutes of Health (NIH), developed and managed by NIH's National Center for Biotechnology Information (NCBI) in the National Library of Medicine (NLM).
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Facial Nerve Schwannoma of the Cerebellopontine Angle: A Diagnostic Challenge - Lassaletta, Luis; Roda, José María; Frutos, Remedios; Patrón, Mercedes; Gavilán, Javier
Facial nerve schwannomas are rare lesions that may involve any segment of the facial nerve. Because of their rarity and the lack of a consistent clinical and radiological pattern, facial nerve schwannomas located at the cerebellopontine angle (CPA) and internal auditory canal (IAC) represent a diagnostic and therapeutic challenge for clinicians. In this report, a case of a CPA/IAC facial nerve schwannoma is presented. Contemporary diagnosis and management of this rare lesion are analyzed.
89.
Giant Parapharyngeal Space Lipoma: Case Report and Surgical Approach - Smith, Jonathan C.; Snyderman, Carl H.; Kassam, Amin B.; Fukui, Melanie B.
Large parapharyngeal space tumors near critical neurovascular structures pose challenging management problems. Only eight cases of a lipoma in the parapharyngeal space have been reported. We present a surgical approach that permits safe resection of such unusual tumors.
90.
Giant Fusiform Basilar Artery Aneurysm Causing Obstructive Hydrocephalus - Gelal, Fazil; Vidinli, Berna Dirim; Yurt, Alaattin; Cakir, Yusuf; Uygur, Murat
A 58-year-old man presented with a sudden onset gait disturbance and urinary incontinence. Magnetic resonance (MR) imaging and MR angiography showed a fusiform basilar artery aneurysm, 2 cm in diameter and 5 cm long. The aneurysm was thrombosed except the ectatic basilar artery flowing through it. Compression of the cerebrospinal fluid (CSF) pathways caused obstructive hydrocephalus with resultant transependymal CSF leakage. Conventional angiography missed the aneurysm. A one-sided ventriculoperitoneal shunt was placed to treat the patient's hydrocephalus. The patient's symptoms improved after surgery. MR imaging and MR angiography were useful noninvasive methods of detecting the aneurysm, defining its relationship with...
92.
Current Results of the Surgical Management of Acoustic Neuroma - Lee, Sun H.; Willcox, Thomas O.; Buchheit, William A.
A retrospective analysis of 162 consecutive cases in 160 patients who underwent microsurgical resection of vestibular schwannomas between October 1995 and June 2001 was undertaken to compare the results with those of other treatment modalities. Patient hospital records, operative video pictures, neuroimaging studies, audiograms, and follow-up data were reviewed. The mean follow-up period was 24 months.
93.
Commentary - David, Carlos A.; Catalano, Peter J.
94.
Skull Base Neurocytoma: Case Report and Review of the Literature of Extraventricular Neurocytomas - Kowalski, Robert J.; Prayson, Richard A.; Lee, Joung H.
We report a rare skull base neurocytoma. A 44-year-old female with a history of focal seizure and progressive right-sided weakness sought treatment at an outside institution, where she underwent total resection of a left medial sphenoid wing paraganglioma in 1984. In 1995 after experiencing intense left-sided headaches for 3 weeks, the patient presented to our institution. Magnetic resonance imaging revealed a large local recurrence. She had deficits dating to her initial surgery, including moderate right-sided hemiparesis, complete left ophthalmoplegia, and left facial numbness.
96.
Plasma Cell Tumors of the Skull Base: Four Case Reports and Literature Review - Wein, Richard O.; Popat, Saurin R.; Doerr, Timothy D.; Dutcher, Paul O.
Four patients (mean age, 46 years; range, 28 to 60) with skull base plasmacytomas are presented along with a review of the literature examining the progression of anterior and central skull base plasma cell tumors to multiple myeloma. The primary sites were the nasopharynx, orbital roof, sphenoid, and clivus. Three patients presented with extensive local spread of tumor. Two patients were diagnosed with multiple myeloma and treated with chemotherapy. Patients with an isolated plasmacytoma were treated with external beam radiation. A partial or complete response to therapy was seen in all four cases. Skull base plasma cell tumors are uncommon...
99.
Second Malignant Tumors After Treatment of Nasopharyngeal Carcinoma: Four Case Reports and Literature Review - Malone, James P.; Levin, Roger J.
The purpose of this study was to identify the histopathology, location, and latency interval for the development of second malignant tumors (SMT) after successful treatment for nasopharyngeal carcinoma (NPC). Of 55 patients, four developed SMT after successful treatment of NPC in a single institutional series for an incidence of 7%. An additional 31 patients with SMT after treatment for NPC were identified from the literature. At minimum, all patients were treated with radiotherapy to the primary site. The histopathology of SMT included sarcoma (69%), squamous cell carcinoma (17%), adenocarcinoma (6%), meningioma (6%), and lymphoma (3%). SMT occurred at various sites...
100.
The Transfrontal Approach Using Nasal Endoscopy to Treat Anterior Skull Base Carcinomas - Kohno, Naoyuki; Kitahara, Satoshi; Tamura, Etuyo; Tanabe, Tetuya; Ohno, Yoshihiro
We used a simple subcranial procedure that employed nasal endoscopy to resect two anterior skull base tumors. The solid geometry of the deep frontal sinus must be known to determine the appropriateness of this technique. Since 1999 two patients underwent this technique and have exhibited no signs of local or distant disease for 36 months and 32 months, respectively. This approach minimizes visible scarring, provides a wide exposure of the roof of the anterior ethmoid, and reduces the risks of excessive bleeding and neurogenic complications. The patients recovered rapidly so the treatment was cost-effective and the patients achieved an early...
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