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 321 - 340 de 551
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Commentary - David, Carlos A.; Catalano, Peter J.
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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.
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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...
327.
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...
328.
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...
329.
Recurrent Anterior Skull Base Plasmocytoma - Gil, Ziv; Cohen, Jacob T.; Spektor, Sergei; Leider-Trejo, Leonor; Fliss, Dan M.; Beasley, Nigel; Gullane, Patrick; Donald, Paul; Draf, Wolfgang; Raveh, Joram
330.
Somatostatin Therapy for Glomus Tumors: A Report of Two Cases - Rafferty, M. A.; Walsh, R. M.; Walsh, M. A.
Glomus tumors of the head and neck are benign vascular lesions that often provide dilemmas in management. The presence of somatostatin receptors on the tumor cell surface has facilitated an additional imaging technique in the form of radiolabeled octreotide scanning. The use of the somatostatin analogue, octreotide, also provides a therapeutic option for inoperable or recurrent tumors. We present two patients, one with a surgically inaccessible tumor that recurred after primary radiotherapy and one who underwent incomplete resection because of the tumor's proximity to the internal carotid artery. Neither tumor has shown further growth 5 and 3 years after treatment...
331.
Blepharocele After Head Injury - Bhatoe, Harjinder Singh
Blepharocele is a rare complication of skull base injury involving the orbital roof. We present a 23-year-old male who developed blepharocele due to an orbital rim fracture and basal dural tear. His vision remained intact. The lesion resolved completely after surgical repair of the basal dura.
334.
Bilateral Occipital Condyle Fracture: Report of Two Cases - Schrödel, Markus H.; Kestlmeier, Ralph; Trappe, Anna E.
Occipital condyle fractures are a rare finding in trauma victims. Bilateral fractures are even more unusual and have typically been reported in autopsy studies. We treated two patients with bilateral occipital condyle fractures who had only minor symptoms. Anderson and Montesano's classification,1 possible cranial nerve palsies, diagnosis, and treatment of this rare fracture are discussed.
335.
Pseudobulbar Palsy Caused by a Large Petroclival Meningioma: Report of Two Cases - McCormick, William E.; Lee, Joung H.
Two patients sought treatment for symptoms of bulbar motor dysfunction and the marked emotional lability that characterizes pseudobulbar palsy (PBP). Magnetic resonance (MR) imaging showed large petroclival masses with severe compression and displacement of the brainstem. A suboccipital craniectomy with a transpetrosal, transtentorial approach to the tumor was performed in both patients. One patient required a second-stage surgery to resect an extension of the tumor into the cavernous sinus. In both patients pathological evaluation confirmed the diagnosis of syncytial meningioma. After surgery, PBP resolved in both patients. Large posterior fossa tumors should be included in the differential diagnosis of patients...
336.
A Precision Method for Contouring Bioresorbable Implants in Craniomaxillofacial Surgery - DeLacure, Mark D.; Kuriakose, M. Abraham
Bioresorbable implants (meshs and plates) are increasingly used in reconstructive craniofacial and skull base surgery. Usually these implants must be contoured to fit the complex craniofacial anatomy ex vivo; occasionally final contouring is performed in vivo and must be done without damaging surrounding structures (e.g., dura, brain). We report a precision method for in vivo contouring of bioresorbable implants using the Shaw hemostatic thermal scalpel.
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