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).
Mostrando recursos 341 - 360 de 551
341.
Endoscopic Repair of Acquired Encephaloceles, Meningoceles, and Meningo-Encephaloceles: Predictors of Success - Zweig, Julie L.; Carrau, Ricardo L.; Celin, Scott E.; Snyderman, Carl H.; Kassam, Amin; Hegazy, Hassan
Meningoceles, encephaloceles, and meningo-encephaloceles may develop through defects associated with congenital anomalies or through defects produced by tumor, trauma, or surgery. Their initial management, surgical indications, and repair techniques are not universally accepted. We undertook this study to compare the contributions of different surgical techniques and materials to the success of endoscopic repairs of acquired meningo-encephaloceles. We also examined whether characteristics of the patient, the meningo-encephalocele, or the adjunctive treatment influenced the outcome of the repair.
343.
Abnormal Course of the Oculomotor Nerve on the Clivus Combined with a Petroclival Meningioma: Case Report - Katayama, Masateru; Kawase, Takeshi; Sato, Shuzo; Kojima, Atsuhiro; Yoshida, Kazunari
The course of the oculomotor nerve on the clivus was abnormal in a patient with petroclival meningioma. He complained of gait disturbance. A gadolinium-enhanced magnetic resonance image demonstrated a 4.4-cm enhancing mass in the petroclival region. The tumor was removed via an anterior transpetrosal-transtentorial approach. Normally, the oculomotor nerve originates from the brainstem and enters the oculomotor trigone. In this patient, the oculomotor nerve entered the dura mater at the upper clivus, behind the posterior clinoid process, and coursed parallel to the basilar artery. This entrance is lower than the normal entry point of the oculomotor nerve. The abnormal entrance...
344.
Commentary - Casey, Kenneth F.; Jannetta, Peter J.
346.
Optic Nerve Decompression for Orbitofrontal Fibrous Dysplasia - Abe, Takumi; Sato, Kaneshige; Otsuka, Takaharu; Kawamura, Noriyoshi; Shimazu, Motohiko; Izumiyama, Hitoshi; Matsumoto, Kiyoshi
Orbitofrontal fibrous dysplasia often involves the bony orbit and the optic canal. Although fibrous dysplasia reportedly produces compression of the optic nerve leading to visual distrubances, optic nerve decompression in patients without clinical signs of optic neuropathy is still controversial. We describe two patients with orbitofrontal fibrous dysplasia without signs of visual disturbance and one patient with McCune-Albright syndrome and progressive visual impairment. Optic nerve decompression was performed prophylactically for two patients and therapeutically for one patient through the transcranial extradural route. Dystopias and craniofacial deformities induced by fibrous dysplasia also were corrected. The micropressure suction-irrigation system was especially effective...
347.
Intradural Invasion of Chordoma: Two Case Reports - Gonzalez-Martinez, Jorge A.; Guthikonda, Murali; Vellutini, Eduardo; Zamorano, Lucia; Li, Qinghang; Kupski, William; Diaz, Fernando G.
Chordomas are rare tumors of the central nervous system and primarily occur in the extradural space. We report two patients with intracranial chordomas located in the region of the clivus that invaded the prepontine cisterns. The patients, 45 and 62 years old, had histories of cranial neuropathies and headache, respectively. Petrosal approaches were performed in both with radical resection of the tumors. Anatomopathological studies confirmed the diagnosis of chordoma. The symptoms of both patients resolved, and they have had no recurrence after 18 months of follow-up. Intradural chordomas or extradural chordomas that invade the intradural space are difficult to differentiate...
349.
Solitary Schwannoma of the Olfactory Groove: Case Report and Review of the Literature - Carron, Jeffrey D.; Singh, Ran Vijai P.; Karakla, Daniel W.; Silverberg, Marc
Schwannomas of the olfactory groove are rare tumors. Only 10 have been reported in the past century. The case of a 59-year-old woman with an isolated olfactory schwannoma with cribriform plate erosion is presented.
350.
Commentary - Casey, Kenneth F.; Jannetta, Peter J.
352.
Comparison of the Exposure Obtained by Endoscope and Microscope in the Extended Trans-Sphenoidal Approach - Batay, Funda; Vural, Emre; Karasu, Aykut; Al-Mefty, Ossama
Objective: Trans-sphenoidal surgery is often combined with other approaches for the treatment of middle cranial base tumors. By combining a maxillotomy with trans-sphenoidal approach, significantly wider exposure to these regions is gained. However, endoscope-assisted techniques have also been used for sellar and parasellar and upper clival regions. Methods: An extended trans-sphenoidal approach was performed on 10 cadaver heads using the operating microscope and was repeated with a 0-degree endoscope. The mean horizontal and vertical distances were measured and pictured for each technique, and both distances were compared using a parametric paired Student's t-test. Results: The mean horizontal distances in the...
353.
Postmastoidectomy Pneumocephalus: Case Report - Dubey, Siba P.; Jacob, Ollapalili; Gandhi, Mitesh
Chronic otitis media, unlike trauma, seldom leads to the development of tension pneumocephalus. Rarely, it occurs as a complication of mastoid surgery. A Melanesian woman sought treatment for loss of speech, hemiparesis, and headache 4 weeks after undergoing canal-down mastoidectomy for cholesteatoma. The tension pneumocephalus was decompressed urgently by aspirating air via a cannula through the burr hole, and the mastoid cavity was obliterated. She recovered completely. Twelve additional patients with postmastoidectomy pneumocephalus reported in the literature are reviewed.
355.
Transpterygoid Trans-sphenoid Approach to the Lateral Extension of the Sphenoid Sinus to Repair a Spontaneous CSF Leak - Bachmann-Harildstad, Gregor; Kloster, Roar; Bajic, Radoslav
Objective and Importance: Cerebrospinal fluid (CSF) fistula from the middle cranial fossa into the sphenoid sinus is a rare condition. In the past, the treatment of choice has been closure via a craniotomy. Only few geriatric cases are known, which were successfully operated by endoscopic surgery. We present a further case of nontraumatic CSF fistula originating from the middle cranial fossa. A new endoscopic technique was applied. We discuss treatment options for this rare defect. Clinical Presentation: A 76-year-old patient presented with a 2-year history of rhinorrhea. High levels of ?-trace protein pointed to a diagnosis of CSF fistula. The...
356.
Cervical ParagangliomasTumor Control and Long-Term Functional Results after Surgery - Kollert, Malte; Minovi, Amir A.; Draf, Wolfgang; Bockmühl, Ulrike
Objective: To report long-term functional results of the surgical treatment of cervical paragangliomas. Patients and Methods: A retrospective review of 22 patients with 34 head and neck paragangliomas of which 27 were resected between 1981 and 2004. Of these, 16 were carotid body tumors and 11 were vagal paragangliomas. There were 13 women and 9 men with an average age of 48.6 years (range, 26 to 75 years; median, 49 years) and the mean follow-up period was 82 months (range, 3 to 184 months; median, 61 months). Results: There were 13 solitary tumors of which 5 were carotid body tumors...
357.
Clival Incidentaloma - Nakaji, Peter; van Loveren, Harry R.; Agazzi, Siviero; Teo, Charles
358.
Bilateral Squamous Cell Carcinoma of the Temporal Bones - Bibas, Athanasios G.; Gleeson, Michael J.
We report a case of bilateral squamous cell carcinoma of the temporal bones in a 66-year-old woman who underwent a left subtotal petrosectomy and a right lateral temporal bone resection. Hearing rehabilitation was successfully achieved by fitting a bone-anchored hearing aid (BAHA) on the right side. We feel that in cases where the extent of the tumor permits a lateral temporal bone resection in at least one side, fitting of a BAHA can achieve a good outcome without resorting to tympanoplasty techniques that may compromise the medial end of the surgical resection.
359.
Necrotizing Fasciitis of the Skull Base and Neck in a Patient with AIDS and Non-Hodgkin's Lymphoma - Cavel, Oren; Gil, Ziv; Khafif, Avi; Leider-Trejo, Leonor; Segev, Yoram; Werner, Ben; Pivarov, Arie; Fliss, Dan M.
Necrotizing fasciitis is a rapidly progressing, life-threatening soft tissue bacterial infection found more frequently in immunocompromised subjects and rarely in the head and neck. We report a rare case of a patient with acquired immunodeficiency syndrome (AIDS) and non-Hodgkin's lymphoma (NHL) who presented with a high fever and supraorbital cellulitis 1 week after undergoing chemotherapy. He received intravenous antibiotic therapy but soon developed dyspnea and trismus with rapid extension of the cellulitis to the face, ipsilateral infratemporal fossa (ITF), and bilateral neck. An awake tracheotomy was followed by surgical exploration and drainage and debridement of the supraorbital and ITF areas,...
360.
Preoperative Audiovestibular Handicap in Patients with Vestibular Schwannoma - Humphriss, Rachel L.; Baguley, David M.; Axon, Patrick R.; Moffat, David A.
Objectives: To evaluate preoperative hearing, dizziness, and tinnitus handicap in patients with unilateral vestibular schwannoma (VS). Design: Prospective administration of the Hearing Handicap Inventory (HHI), Dizziness Handicap Inventory (DHI), and Tinnitus Handicap Inventory (THI), prior to surgical intervention. Setting: A tertiary referral neuro-otology clinic. Participants: A total of 145 consecutive patients who were admitted for excision of their vestibular schwannomas between May 1998 and July 2002. Main Outcome Measures: HHI, THI, and DHI scores. Results: HHI, THI, and DHI scores were all found to be significantly correlated. There was no significant association between tumor size and any of the questionnaire...
341.
