المؤلفون: B. George

المصدر: Practical Handbook of Neurosurgery ISBN: 9783211848197

مصطلحات موضوعية: Osteoid osteoma, Foramen magnum, Nerve root, business.industry, Referral process, Anatomy, medicine.disease, Sacrum, Skull, medicine.anatomical_structure, medicine, Cyst, Chondrosarcoma, business

الوصف: The Foramen Magnum area (F.M.) is a complex region with many different pathologies that may develop either intradurally or extradurally. The former mainly include meningiomas (M) and neurinomas (N), while the latter corresponds to chordomas (Ch) and bone tumors (BT). Altogether these pathologies are very rare. The most common type (M) accounts for less than 0.5% of the intracranial tumors and 2.5% of the intraspinal tumors. In Table 1 the distribution of F.M. tumors in our personal series is given. Meningiomas account for about 70% of the intradural tumors and for 40% of all F.M. tumors; they represent 6.5% of posterior fossa M, 1.5% of cranial M, 12% of spinal M and 42% of cervical M. Neurinomas include C1 and C2 spinal nerve roots N and XI and XII cranial nerve N. The C2 N is the most frequent and represents 5% of spinal N and 20% of cervical N. Chordomas are most frequently located in the sacrum (40%), at the skull base (38%) and along the spine (22%). In our series Ch at the cranio-cervical junction (CCJ) level are quite predominant among skull base (65%) and cervical (85%) locations. However, there is certainly a bias related to our referral process. In Wellinger series, F.M. Ch accounts for 30% of cervical Ch and 12% of all spinal Ch. Then bone tumors (BT) (16% of all F.M. tumors) includes metastases (35% of BT) and primary BT of many different types; the most frequent ones are osteoid osteoma, chondrosarcoma, aneurysmal cyst and plasmocytoma.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::6a3c7ad85e22fc0c8799fc777fbebe12Test
https://doi.org/10.1007/978-3-211-84820-3_53Test

المؤلفون: Marc Sindou, E. Gimbert

المصدر: Advances and Technical Standards in Neurosurgery ISBN: 9783211787403

مصطلحات موضوعية: musculoskeletal diseases, congenital, hereditary, and neonatal diseases and abnormalities, medicine.medical_specialty, Periosteum, Foramen magnum, business.industry, Decompression, medicine.medical_treatment, Laminectomy, Chiari type i malformation, medicine.disease, nervous system diseases, Surgery, Hydrocephalus, medicine.anatomical_structure, medicine, Arachnoid Membrane, business, Syringomyelia

الوصف: Posterior craniocervical decompression is the procedure most currently used for treating Chiari I malformation (alone or in association with syringomyelia in the absence of hydrocephalus). We reviewed the various technical modalities reported in the literature. We present a personal series of 44 patients harboring Chiari type I malformation (CM-I) operated with a suboccipital craniectomy and a C1 (or C1/C2) laminectomy, plus an extreme lateral Foramen Magnum opening, a “Y” shaped dural incision with preservation of the arachnoid membrane, and an expansile duraplasty employing autogenous periosteum. Outcomes were analyzed with follow-up ranging from 1 to 10 years (4 years on average).

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::39870db9f9c9f23c632cadc74144ea11Test
https://doi.org/10.1007/978-3-211-78741-0_4Test

المؤلفون: L. N. Sekhar

المصدر: Practical Handbook of Neurosurgery ISBN: 9783211848197

مصطلحات موضوعية: musculoskeletal diseases, Foramen magnum, business.industry, medicine.medical_treatment, Pituitary tumors, Anatomy, Microsurgery, Adenoid, medicine.disease, Skull, medicine.anatomical_structure, otorhinolaryngologic diseases, Medicine, business, Jugular foramen

الوصف: The central skull base may be defined as the spheno-clival and clival areas. Lesions involving this region may be intradural or extradural. Intradural lesions may be petroclival or lower clival/foramen magnum meningiomas, trigeminal or jugular foramen/hypoglossal schwannomas, or other benign tumors. Lesions involving the extradural area are predominantly chordomas, chondrosarcomas, cholesterol granulomas, adenoid cystic carcinomas, and some invasive pituitary tumors. Many specialized skull base approaches have been developed to deal with these lesions.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::6294487e9dcbea10210896d0a2876c6cTest
https://doi.org/10.1007/978-3-211-84820-3_9Test

المؤلفون: H. Bertalanffy, H. M. Klein, Joachim M. Gilsbach, Takeshi Kawase, L. Mayfrank, W. Seeger

المصدر: Modern Neurosurgery of Meningiomas and Pituitary Adenomas ISBN: 9783709194522

مصطلحات موضوعية: medicine.medical_specialty, Foramen magnum, Surgical approach, Access route, Preoperative planning, business.industry, medicine.medical_treatment, Microsurgery, medicine.disease, Foramen Magnum Meningioma, Surgery, Meningioma, medicine.anatomical_structure, Total removal, Medicine, business

الوصف: The authors report their experiences gained from 19 patients with ventral or ventrolateral foramen magnum meningiomas operated on via the dorsolateral, suboccipital transcondylar access route. It is emphasized that the microsurgical management of these lesions includes two important aspects which increase the safety of the procedure: a meticulous preoperative planning based on the micro-anatomical details of each patient, as well as an individualized tailoring of the surgical approach. There were no deaths, and, in the past 5 years, no neurological complications in this series. Gross total removal of the tumour was achieved in each case. It is concluded that microsurgical removal of ventral or ventrolateral foramen magnum meningiomas with this technique constitutes a safe and recommendable procedure.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::f280d655b9f3f412346645f02dac14a5Test
https://doi.org/10.1007/978-3-7091-9450-8_23Test

المؤلفون: Rudolf Fahlbusch

المصدر: Modern Neurosurgery of Meningiomas and Pituitary Adenomas

مصطلحات موضوعية: Transsphenoidal surgery, medicine.medical_specialty, Foramen magnum, Pathology, business.industry, medicine.medical_treatment, medicine.disease, Cerebellopontine angle, nervous system diseases, medicine.anatomical_structure, Pituitary adenoma, Cavernous sinus, otorhinolaryngologic diseases, medicine, Clinical significance, Histopathology, Neurosurgery, business, neoplasms

الوصف: Pituitary Adenomas.- Current Pathological Classification of Pituitary Adenomas.- Molecular Biological Research in Pituitary Adenomas from the Pathologists' View.- Molecular Biology of Growth-Hormone-Secreting Human Pituitary Tumours: Biochemical Consequences and Potential Clinical Significance.- Surgical Results in Microadenomas.- Management of Huge Pituitary Adenomas.- The Role of Transcranial Surgery in the Management of Pituitary Adenoma.- Proliferation Parameters for Pituitary Adenomas.- Protein Kinase C and Growth Regulation of Pituitary Adenomas.- MR Imaging of Residual Tumor Tissue After Transsphenoidal Surgery of Hormone-Inactive Pituitary Macroadenomas: A Prospective Study.- Persistent and Recurrent Hypercortisolism After Trans sphenoidal Surgery for Cushing's Disease.- Surgical Treatment of Pituitary Adenomas in Elderly Patients.- Combined Surgery and Radiotherapy of Invasive Pituitary Adenomas - Problems of Radiogenic Encephalopathy.- LINAC-Radiosurgery (LINAC-RS) in Pituitary Adenomas: Preliminary Results.- Comparison of Thermoregulatory Characteristics of Patients with Intra-and Suprasellar Pituitary Adenomas.- Meningiomas.- The Molecular Biology of Hormone and Growth Factor Receptors in Meningiomas.- Hormonal Dependency of Cerebral Meningiomas.- Surgical Treatment of Meningiomas Involving the Cavernous Sinus: Evolving Ideas Based on a Ten Year Experience.- Meningiomas Involving the Parasellar Region.- Atypical and Malignant Meningiomas: Evaluation of Different Radiological Criteria Based on CT and MRI.- Prognostic Significance of Nuclear DNA Content in Human Meningiomas: A Prospective Study.- Correlation Between Cytogenitic and Clinical Findings in 215 Human Meningiomas.- Surgical Results of Spinal Meningiomas.- Microsurgical Management of Ventral and Ventrolateral Foramen Magnum Meningiomas.- Meningiomas of the Cerebellopontine Angle.- Management of Petroclival Meningiomas: A Critical Analysis of Surgical Treatment.- Symptomatology, Surgical Therapy and Postoperative Results of Sphenoorbital, Intraorbital-Intracanalicular and Optic Sheath Meningiomas.- Factors Influencing Morbidity and Mortality After Cranial Meningioma Surgery - a Multivariate Analysis.- Clinical Relevance of Somatostatin Receptor Scintigraphy in Patients with Skull Base Tumours.- Progesterone Receptors in Tumor Fragment Spheroids of Human Meningiomas.- PET-Study of Intracranial Meningiomas: Correlation with Histopathology, Cellularity and Proliferation Rate.- Index of Keywords.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::5bb762ff2029e750ceaaa8dc26a4197cTest
https://doi.org/10.1007/978-3-7091-9450-8Test

المؤلفون: Bernard Williams

المصدر: Advances and Technical Standards in Neurosurgery ISBN: 9783709174333

مصطلحات موضوعية: musculoskeletal diseases, congenital, hereditary, and neonatal diseases and abnormalities, medicine.medical_specialty, Foramen magnum, business.industry, Hindbrain, medicine.disease, nervous system diseases, Surgery, Hydrocephalus, body regions, Skull, medicine.anatomical_structure, stomatognathic system, Syringobulbia, Medicine, Arachnoiditis, business, Syringomyelia, Cervical vertebrae

الوصف: Syringomyelia is a condition with many possible causes, the commonest of which seems to be an abnormality at the foramen magnum. Such cases may be grouped under the heading of “Hindbrain related syringomyelia” and the principles of treatment for all such cases are largely similar. The commonest of these foramen magnum region abnormalities is hindbrain herniation which may be associated with a history of birth difficulties, a small posterior fossa, segmentation abnormalities of the cervical vertebrae or the base of the skull, arachnoiditis of the subarachnoid spaces, subarachnoid pouches, hydrocephalus and intracranial tumours or tumours partly blocking the foramen magnum.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::44a0a694d5eb60fdebb7838467ef36fdTest
https://doi.org/10.1007/978-3-7091-6912-4_4Test

المؤلفون: C. Laurian, B. George

المصدر: Proceedings of the 6th European Congress of Neurosurgery ISBN: 9783709140901

مصطلحات موضوعية: Foramen magnum, medicine.anatomical_structure, business.industry, Vertebral artery, medicine.artery, Foramen transversarium, Medicine, Anatomy, Anastomosis, business

الوصف: Operations on the vertebral artery (VA) below its entry into the foramen transversarium of C6 are well known7, 15. Above, in the foramina transversaria, exposure of the vertebral artery has been performed for arteriovenous fistula4, 8, 12−14, 18, 19, 21 compressive uncodiscarthrosis9−17, or anastomosis from the external carotid artery5, 6 In the third portion, between C2 and the foramen magnum, the surgical route is much less well-known. A reappraisal of surgical possibilities in this portion of the vertebral artery has been performed after anatomical study. A simple route was defined and was used in one case.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::68aec003e2f5e27a1b1d9d7a32f1b788Test
https://doi.org/10.1007/978-3-7091-4088-8_65Test

المؤلفون: C. G. Ullrich

المصدر: Cervical Spine II ISBN: 9783709190579

مصطلحات موضوعية: Foramen magnum, medicine.diagnostic_test, Computer science, business.industry, Radiography, Computed tomography, Anatomy, Craniocervical junction, Cervical spine, medicine.anatomical_structure, medicine, Ct technique, Imaging technique, business, Ct reconstruction

الوصف: The radiographic evaluation of the bony anatomy of the upper cervical spine and foramen magnum region is relatively difficult. The complex bony geometry of this region makes no two-dimensional imaging technique entirely satisfactory. Multiplanar CT reconstruction (MPR) images are commonly used to aide in the interpretation of axial CT studies. The recent development of three-dimensional computer graphics images derived from routine axial CT images (3D-CT) provides a powerful new method for displaying these bony anatomic relationships. This report briefly explains the 3D-CT technique and discusses its advantages in the craniocervical junction region.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::c66339960fe3b3304a2c46f9410d00ffTest
https://doi.org/10.1007/978-3-7091-9055-5_36Test

المؤلفون: Beniamino Guidetti, Aldo Spallone

المصدر: Advances and Technical Standards in Neurosurgery ISBN: 9783709174517

مصطلحات موضوعية: medicine.medical_specialty, Pathology, Foramen magnum, business.industry, Vertebral artery, Anterior spinal artery, Anatomy, medicine.disease, Cerebellopontine angle, Meningioma, medicine.anatomical_structure, medicine.artery, medicine, Neurofibroma, Meningeal Neoplasm, Neurosurgery, business

الوصف: Masses located at the craniovertebral junction comprise a variety of neo-plastic and non-neoplastic processes, which have in common an insidious, often bizarre, clinical course resembling that of degenerative diseases of the nervous system, due to the frequent coexistence of signs of both posterior fossa and long tract involvement.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::64a0ce5f7f0dbd14d1b2cc472b92b7dcTest
https://doi.org/10.1007/978-3-7091-6954-4_3Test

المؤلفون: Robert Schönmayr

المصدر: Primary and Secondary Brain Stem Lesions ISBN: 9783709189436

مصطلحات موضوعية: Foramen magnum, Cistern, business.industry, Anatomy, medicine.disease, Cisterna, medicine.anatomical_structure, stomatognathic system, otorhinolaryngologic diseases, medicine, Intracranial tumours, Hernia, Spinal canal, Tomography, business, Intracranial pressure

الوصف: Arnold (1894) and Chiari (1896) described the displacement of the cerebellar tonsils through the foramen magnum into the initial part of the spinal canal. However, they related this observation exclusively to the simultaneous occurrence of malformations. Alquier (1905) and Henschen (1910) reported such tonsillar alterations in intracranial tumours. Cushing (1917 and 1929) recognized the connection with the increase of intracranial pressure and coined the term “cerebellar pressure cone”.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::1ea7eaa260b3cdfe1c8743534bf44373Test
https://doi.org/10.1007/978-3-7091-8941-2_1Test