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U Neubauer

Publications and source records attributed to U Neubauer.

25 records · Page 2Linked to original sources
PubMed1990

[Retroperitoneal vascular injuries in lumbar intervertebral disk operation: report of 2 cases with a special course].

The author reports on two cases of retroperitoneal vascular lesions during lumbar vertebral disc surgery. The causative origin of the lesion and the initial signs and symptoms agree with the experiences described in the literature. However, the further course of these specific lesions differed to some extent from what had been expected. In the case where the aorta had been injured, there was at first a neurological deterioration associated with paraplegia; a pattern of shock developed after two hours only. The second case was an arterial lesion that did not require surgery due to spontaneous occlusion of the injured vessel (fifth lumbar artery, or a. lumbalis ima).

Adult↗
PubMed1990

Magnetic source localization in focal epilepsy. Multichannel magnetoencephalography correlated with magnetic resonance brain imaging.

Initial results of magnetic source localization by means of multichannel recording using a 10 or a 31 channel system are reported. Simultaneous magnetoencephalographic (MEG) and electroencephalographic (EEG) (scalp, sphenoidal and foramen oval) recording, as well as magnetic resonance imaging (MRI) with a fixed head position, permits the projection of brain structures and the source localized from MEG into a three-dimensional coordinate system. From 8 patients investigated it can be clearly seen that the method is of diagnostic relevance for patients with temporal lobe epilepsy. Results are demonstrated for 3 patients with interesting findings concerning the anatomical correlation with source localization. The findings indicate that MRI-correlated magnetic source localization by means of multichannel recordings provides important advantages in epilepsy research. (1) Increased precision permits noninvasive localization. Deeper sources in the temporal lobe are localized from MEG combined with scalp or minor invasive EEG. (2) Investigation time is considerably shortened. (3) Single events can be localized for supplementary presurgical information concerning the three-dimensional anatomical localization of focal epileptic activity in the brain.

Adult↗
PubMed1989

[Morton metatarsalgia].

Four cases of Morton's metatarsalgia are presented. In all cases history and clinical findings were typical. The duration of the disease until the assessment of the final diagnosis with an average of three years was very long. Conservative treatment in all cases was unsuccessful, operative excision of the neuroma resulted in complete relief of pain.

Adult↗
PubMed1989

Neuro-rhinosurgical treatment of aesthesioneuroblastoma.

The results of a combined neuro-rhinosurgical procedure in eight cases of aesthesioneuroblastoma are presented. All patients were suffering from tumours in the advanced stage (stage C according to Kadish). Diagnosis was established by the clinical history, neuro-radiological imaging and by endoscopic endonasal biopsy. Contrary to most reports in the literature the authors performed a one step operative removal of the whole tumour mass by a combined transcranial-transbasal approach alone. A second transfacial operation was unnecessary in all our cases. To the best of our knowledge only Loew (see Jakumeit 1971) already in the 1960ties used a comparable one step transcranial approach for tumour removal. The long-term survival rate in our patients is 50%, a result comparable to reported series in the literature. Mortality is due to early recurrences and metastases within a few months after the initial treatment including post-operative irradiation. Four patients are living without evidence of tumour recurrence 1.5 to 5 years after treatment. The authors surgical technique is presented in detail and compared with the results of other treatment modalities.

Adolescent↗
PubMedDate not supplied

Ictal and interictal activity in partial epilepsy recorded with multichannel magnetoelectroencephalography: correlation of electroencephalography/electrocorticography, magnetic resonance imaging, single photon emission computed tomography, and positron emission tomography findings.

Ictal and interictal epileptic activity was recorded for the first time by multichannel magnetoencephalography (MEG) in three patients with partial epilepsy. Pre- and intra-operative localization of the epileptogenic region was compared. The interictal epileptic activity was localized at the same region of the temporal or frontal lobe as the ictal activity. Main zones of ictal activity were shown to evolve from the tissue at the centers of interictal activity. Pre- and intra-operative electrocorticography (ECoG) as well as postoperative outcome confirmed localization in the temporal and frontal lobe. Results also correlated with findings from scalp EEG, interictal and ictal single photon emission computed tomography (SPECT), positron emission tomography (PET), and magnetic resonance imaging (MRI). Combined multichannel MEG/EEG recording permitted dipole localization of interictal and ictal activity.

Adult↗
PubMedDate not supplied

Chondroid tumors arising from the meninges--report of 2 cases and review of the literature.

Chondroid tumors are rare intracranial tumors usually arising from the base of the skull. We present 2 cases of intracranial cartilaginous tumors with unusual location. In case 1, a 19-year-old woman, a chondroma of the falx cerebri with extensive secondary ossification was diagnosed. In case 2, a 30-year-old woman, a low-grade chondrosarcoma was resected from the right frontal lobe. Both patients showed an uneventful clinical course without evidence of disease 4.5 and 6 years after total extirpation. Our cases show that chondromas and low-grade chondrosarcomas of the dura and meninges usually occur in young adults with a good prognosis after complete extirpation.

Adult↗