Acta neurochirurgica
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Acta neurochirurgica · Jan 1994
Bovine bone grafting in occipito-cervical fusion for atlanto-axial instability in rheumatoid arthritis.
Bovine bone chips (Surgibone) were used in occipito-cervical fusion in nine patients with atlanto-axial instability due to rheumatoid arthritis. The patients were examined with CT 12-15 months after surgery. Graft resorbtion was observed in one patient. ⋯ One patient was revised, and at the grafted site a bony bridge was found. In conclusion, the use of bovine chips in posterior occipito-cervical fusion will not lead to predictable bone union. However, there seem to be exceptions to that rule.
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Acta neurochirurgica · Jan 1994
Intracranial meningiomas: analysis of recurrence after surgical treatment.
Recurrence of intracranial meningiomas after surgery has long been recognized, but there is still no consensus about factors responsible for recurrence. To better understand such factors, we analysed data on 276 patients with meningiomas who were treated at our institution from 1976 to 1990 (mean follow-up = 5.1 years). Effects of sex, tumour histology, tumour site, and radiotherapy on recurrence were closely studied. ⋯ We found that radiotherapy did not decrease "recurrence" or "regrowth" regardless of when administered, either at first resection or on recurrence. This was true for benign as well as malignant meningiomas. However, due to the small number in our series, we cannot conclude that radiotherapy has no beneficial role in the treatment of meningiomas.(ABSTRACT TRUNCATED AT 250 WORDS)
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Acta neurochirurgica · Jan 1994
Venous and paradoxical air embolism in the sitting position. A prospective study with transoesophageal echocardiography.
This prospective study investigates the frequency of patent foramen ovale (PFO), venous air embolism (VAE) and paradoxical air embolism (PAE) by transoesophageal echocardiography (TOE) in neurosurgical patients operated on in the sitting position. The risk of PAE after exclusion of PFO is assessed. A PFO was identified by pre-operative TOE and VAE and PAE by continuous intraoperative TOE. ⋯ If a PFO is detected, the sitting position should be avoided. A residual risk for PAE remains despite exclusion of PFO because the reliability of TOE is limited. TOE is the method of choice for detecting VAE and PAE.
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Acta neurochirurgica · Jan 1994
Review Case ReportsIntraosseous calvarial meningioma of the skull presenting as a solitary osteolytic skull lesion: case report and review of the literature.
Intraosseous calvarial meningiomas, defined as meningiomas confined to the skull with no epidural or subcutaneous component, are rare and usually exhibit osteoblastic activity. We present a case of a primary intraosseous meningioma in the right frontal bone that presented radiologically as a solitary lytic skull lesion and was completely excised. ⋯ According to our review of the literature, our case is the first with documentation on computed tomography. In cases of solitary osteolytic skull lesions, meningioma should be considered even though it may not seem likely, because management will be directed to radical excision with good prognosis rather than biopsy.
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Acta neurochirurgica · Jan 1994
Comparative Study Clinical Trial Controlled Clinical TrialFavourable influence of opening the lamina terminalis and Lilliequist's membrane on the outcome of ruptured intracranial aneurysms. A study of 197 consecutive cases.
Opening of the lamina terminalis and Lilliequist's membrane--by facilitating CSF circulation in the basal cisterns--favourably influences the outcome in patients with ruptured intracranial aneurysms. This has been demonstrated by the analysis of a series of 197 consecutive cases of ruptured intracranial aneurysms.