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1.

001-es BibID:BIBFORM058412
Első szerző:Bognár László (idegsebész, gyermekidegsebész)
Cím:Tectal plate gliomas. Part III: Apparent lack of auditory consequences of unilateral inferior collicular lesion due to localized glioma surgery / Bognar L.; Fischer C.; Turjman F.; Michel F.; Villanyi E.; Mottolese C.; Guyotat J.; Lapras C.
Dátum:1994
Megjegyzések:The authors present one of their cases operated on for intrinsic tectal plate glioma. The complete resection of the right inferior colliculus (I.C.) had no apparent auditory consequences. The pre- and post-operative tonal and vocal auditory tests were normal. The brain-stem auditory evoked potentials (BAEPs) and middle latency potentials (MLPs) were recorded pre-, post- and intraoperatively. At the end of surgery all waves were present with a marked delay of wave V and a slight delay of the Pa component. The dichotic test showed a significant right ear extinction but admittedly much less important than expected. The role of inferior colliculus (I.C.) in hearing is discussed.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Acta Neurochirurgica (Wein). - 127 : 3-4 (1994), p. 161-165. -
További szerzők:Fischer, Catherine Turjman, Francis Michel F. Villányi Éva Mottolese, C. Guyotat J. Lapras, Claude
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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2.

001-es BibID:BIBFORM058411
Első szerző:Bognár László (idegsebész, gyermekidegsebész)
Cím:Tectal plate gliomas. Part II : CT scans and MR imaging of tectal gliomas / Bognar L., Turjman F., Villanyi E., Mottolese C., Guyotat J., Fischer C., Jouvet A., Lapras C.
Dátum:1994
Megjegyzések:CT scans and MR images were analyzed in 12 patients with histologically proved tectal plate gliomas. In an attempt to identify the nature of these lesions, their radiological characteristics were correlated with the histological results. In four of our patients CT scan failed to show the tumour. MR imaging demonstrated the tectal distortion in all cases. Contrast enhancement, calcification, cystic portions, exophytic nature were observed in both high and low-grade gliomas. We conclude that in the case of intrinsic tectal tumours, the most probable diagnosis is that of low-grade astrocytoma while in the case of exophytic tectal tumours, the differential diagnosis from pineal region tumour is required and a histological verification is necessary.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Acta Neurochirurgica (Wein). - 127 : 1-2 (1994), p. 48-54. -
További szerzők:Turjman, Francis Villányi Éva Mottolese, C. Guyotat J. Fischer, Catherine Jouvet, Anne Lapras, Claude
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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3.

001-es BibID:BIBFORM058415
Első szerző:Fischer, Catherine
Cím:Auditory evoked potentials in a patient with a unilateral lesion of the inferior colliculus and medial geniculate body / Catherine Fischer, Laszlo Bognar, Francis Turjman, Claude Lapras
Dátum:1995
Megjegyzések:Brain-stem, middle latency and late auditory evoked potentials (BAEPs, MLAEPs and LAEPs, respectively) were recorded in a patient 2 months after removal of affecting the quadrigeminal plate. Simultaneously, MRI showed a left unilateral lesion involving the inferior colliculus, brachium colliculi and the medial geniculate body (MGB). On dichotic listening, there was complete extinction of the right ear input, without subjective auditory disturbance. BAEPs were abnormal after stimulation of the right ear alone. Wave V was delayed and reduced in amplitude, and the I-V interval was augmented. Above all, MLAEPs of both ears were very abnormal. The Pa and Na components over the left hemisphere were abolished (Pa) or very reduced in amplitude or abolished (Na) whereas both Pa and Na components over the right hemisphere were normal. LAEPs were asymmetrical, with reduced P1N1P2 complex over the left hemisphere and absence of polarity reversal over the mastoid. It has been demonstrated that a lesion affecting only the inferior colliculus and MGB unilaterally and not extending beyond the MGB can abolish Na and Pa ipsilaterally. Any discussion of Na and Pa sources should take into account the output of the MGB to the auditory radiations, the MGB, the brachium colliculi and the inferior colliculus.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Electroencephalography and clinical neurophysiology. - 96 : 3 (1995), p. 261-267. -
További szerzők:Bognár László (1958-) (idegsebész, gyermekidegsebész) Turjman, Francis Lapras, Claude
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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4.

001-es BibID:BIBFORM058361
Első szerző:Fischer, Catherine
Cím:Auditory early- and middle-latency evoked potentials in patients with quadrigeminal plate tumors / Catherine Fischer, Laszlo Bognar, Francis Turjman, Eva Villanyi, Claude Lapras
Dátum:1994
ISSN:0148-396X
Megjegyzések:Both early auditory evoked potentials (BAEPs) and middle-latency auditory evoked potentials (MLAEPs), were recorded in nine patients suffering from a quadrigeminal plate tumor. These recordings were performed before surgery in six cases and after surgery in three cases. The results of these examinations were correlated with impairments of the midbrain auditory pathways as shown by magnetic resonance imaging. BAEPs and MLAEPs were abnormal in five of nine cases and eight of nine cases, respectively. The two examinations yielded normal results in only one case. These data show that the functional evaluation of the midbrain should not be limited to the recording of BAEPs, routinely performed for brain stem functional evaluation, but should also include recording of MLAEPs, although the technique is a little more delicate. In the five patients with abnormal BAEPs, I-V conduction time was increased unilaterally (three patients) and bilaterally (two patients), and the I/V amplitude ratio was abnormal in two patients. In one of these two patients, isolated destruction of the right inferior colliculus was responsible for an abnormality affecting Wave V of the BAEP that was visible only after left ear stimulation. The most frequently observed MLAEP abnormality was a delay in the peaking of the Pa component, assumed to be of cortical origin. Therefore, a limited impairment of the midbrain may delay the peaking latency of Pa. Unilateral hypovoltage of Na-Pa was also observed. In only one case were Na and Pa components unilaterally abolished, in a patient suffering from a postoperative lesion extending from the right inferior colliculus to the right medial geniculate body.(ABSTRACT TRUNCATED AT 250 WORDS)
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Neurosurgery. - 35 : 1 (1994), p. 45-51. -
További szerzők:Bognár László (1958-) (idegsebész, gyermekidegsebész) Turjman, Francis Villányi Éva Lapras, Claude
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5.

001-es BibID:BIBFORM058437
Első szerző:Lapras, Claude
Cím:Comparative results of simple decompression with opening of the dura and preservation of the arachnoid versus tonsil resection in the treatment of syringomyelia assotiated with Chiari malformation / Lapras C., Guyotat J., Mottolese C., Jouhanneau E., Bret P., Mircevski V., Bognar L.
Dátum:2005
ISSN:0256-7040
Tárgyszavak:Orvostudományok Klinikai orvostudományok idézhető absztrakt
Megjelenés:Childs Nervous System. - 10 (2005), p. 477. -
További szerzők:Guyotat J. Mottolese, C. Jouhanneau E. Bret P. Mircevski V. Bognár László (1958-) (idegsebész, gyermekidegsebész)
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6.

001-es BibID:BIBFORM058410
Első szerző:Lapras, Claude
Cím:Tectal plate gliomas. Part I : microsurgery of the tectal plate gliomas / Lapras C., Bognar L., Turjman F., Villanyi E., Mottolese C., Fischer C., Jouvet A., Guyotat J.
Dátum:1994
Megjegyzések:A series of 12 patients with tectal plate gliomas, is presented treated by direct surgery. Mean age was 19 years. All patients presented with signs of raised intracranial pressure and supratentorial hydrocephalus on CT scan. Diplopia was the most common local sign. CT scan and MR imaging showed 4 intrinsic, 6 exophytic, and 2 ventrally infiltrating tectal tumours. The histological diagnosis was low-grade astrocytoma in 7, high-grade astrocytoma in 2, oligodendroglioma in one, oligo-astrocytoma in one, and ependymoma in one case. The suboccipital supra- and transtentorial approach was used in every cases. Tumour resection was generous at the level of the superior colliculi, but on the contrary, resection was limited at the level of inferior colliculi due to the auditory risk. Tumour removal was total (macroscopically) in 9 cases and partial in 3 cases. There were 4 surgical complications and one death related to surgery. Parinaud's syndrome was the most-common postoperative sequelae. Auditory hallucinations and the acoustic neglect syndrome were seen once. In three cases additional radiotherapy and chemotherapy were given once with severe sequelae. The treatment of tectal plate gliomas is controversial. The role of different therapeutic options remains open. We consider the tectal plate as a relatively safer territory for surgery than the ventral part of the midbrain. The brain stem auditory evoked potentials (BAEPs) and middle latency potentials (MLPs) monitoring can help to determine the appropriate limit of surgery.
Tárgyszavak:Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Acta Neurochirurgica (Wein). - 126 : 2-4 (1994), p. 76-83. -
További szerzők:Bognár László (1958-) (idegsebész, gyermekidegsebész) Turjman, Francis Villányi Éva Mottolese, C. Fischer, Catherine Jouvet, Anne Guyotat J.
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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