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Öğe Complication of epidural fat graft in lumbar spine disc surgery: Case report(Elsevier Science Inc, 1995) Cobanoglu, S; Imer, M; Ozylmaz, F; Memis, MA left-sided L5-S1 lumbar disc herniation operation was performed on a 36-year-old woman in 1987. After a 6-year period, the same patient came back to the clinic with the problem of severe sciatic pain on the same side as before. Upon diagnosis, it was seen that the left S1 radix was compressed with a piece of free autofat graft in the foramen, which was used in the first operation. As far as the writers are informed, this is the first report about a later complication of epidural autofat graft in lumbar spine disc surgery.Öğe Contralateral subdural effusion after aneurysm surgery and decompressive craniectomy: case report and review of the literature(Elsevier Science Bv, 2005) Kilincer, C; Simsek, O; Hamamcioglu, MK; Hicdonmez, T; Cobanoglu, SWe report a complication of decompressive craniectomy in the treatment of aneurismal subarachnoid hemorrhage (SAH) and accompanying middle cerebral artery (MCA) infarction. A 56-year-old man presented with subarachnoid hemorrhage and right sylvian hematoma. He was diagnosed with high-grade SAH and medical therapy was employed. He showed rapid clinical deterioration on day 9 of his admission. Computed tomographic scans showed right MCA infarction and prominent midline shift. Because of the patient's rapidly worsening condition, further evaluation to find origin of SAH could not be obtained, and decompressive right hemicraniectomy was performed. During sylvian dissection, right middle cerebral and posterior communicant artery aneurysms were detected and clipped. One week after operation, a contralateral frontoparietal subdural effusion and left to right midline shift was detected and drained through a burr-hole. Through successive percutaneous aspirations, effusion recurred and complete resolution was achieved after cranioplasty and subduroperitoneal shunt procedures. Decompressive craniectomy is generally accepted as a technically simple operation with a low incidence of complications. In the light of this current case, we hypothesize that a large craniectomy may facilitate the accumulation of recurrent effusion on contralateral side creating a resistance gradient between two hemispheres. This point may be especially true for subarachnoid hemorrhage cases requiring aneurysm surgery. We conclusively suggest that subdural effusions may be resistant to simple drainage techniques if a large contralateral craniectomy does exist, and early cranioplasty may be required for treatment in addition to drainage procedures. (c) 2004 Elsevier B.V. All rights reserved.Öğe The effect of aprotinin on extraneural scarring in peripheral nerve surgery(Springer-Verlag Wien, 1998) Görgülü, A; Imer, M; Simsek, O; Sencer, A; Kutlu, K; Cobanoglu, SExtraneural scarring is one of the factors negatively influencing the result of peripheral nerve surgery. Many organic materials have been used to prevent fibrosis. The effect of aprotinin on peripheral nerve scarring in rats was investigated in this study. Three types of surgical intervention were carried out; namely external neurolysis (I), abrasive injury (II), and anastomosis (III). The coded samples which consisted of pure collagen fibers soaked with aprotinin or phosphate-buffered saline were applied around the left sciatic nerves of rats whereas only sham operations were performed on the right sciatic nerves. Animals were sacrificed after 4 or 6 weeks. Neurological examination, gross evaluation of extraneural fibrosis, and histological study were undertaken. The results have demonstrated that aprotinin is a promising agent in the prevention of extraneural scarring.Öğe A laboratory training model for interhemispheric-transcallosal approach to the lateral ventricle(Springer, 2006) Hicdonmez, T; Hamamcioglu, MK; Parsak, T; Cukur, Z; Cobanoglu, SLaboratory training models are essential for developing and refining surgical skills before clinical application of microneurosurgery. Our aim is to train residents of neurosurgery to be familiar with a basic microneurosurgical technique in access to the lateral ventricle via a transcallosal approach. The training material consists of a 2-year-old fresh cadaveric cow cranium. A four-step approach was designed to simulate microneurosurgical dissection along the falx to visualize cingulated gyri, callosomarginal and pericallosal arteries in order to perform callosotomy and access to the lateral ventricle, and finally to the foramen of Monroe. We conclude that the model perfectly simulates standard microneurosurgical steps in interhemispheric-transcallosal approach to the lateral ventricle and to the area of the foramen of Monroe.Öğe Large intradiploic growing skull fracture of the posterior fossa(Springer, 2006) Hamamcioglu, MK; Hicdonmez, T; Kilincer, C; Cobanoglu, SGrowing skull fractures (GSFs) are rare complications of head injury and mostly occur in infancy and early childhood. Location in the posterior fossa and intradiploic development of a GSF is very uncommon. We report a 7-year-old boy with a large, 9x7x4-cm, occipital intradiploic GSF. The lesion developed progressively over a period of 5 years following a documented occipital linear fracture. This case of a GSF developing from a known occipital linear fracture demonstrates that a GSF may reach a considerable size and, although uncommon, intradiploic development and occipital localization of a GSF is possible.Öğe The modification of the new type of end-to-side anastomosis between carotid arteries in rats: A technical and scanning electron microscopic study(Springer-Verlag Wien, 1996) Imer, M; Okar, T; Cobanoglu, S; Kayapinar, R; Memis, M; Hepgul, K; Kutlu, KModification of a type of end-to-side anastomosis that has been described before is studied. The recipient artery is occluded for only 3-4 minutes to complete the anastomosis by using only the running suture. The anastomotic site was studied by inspection and Scanning Electron Microscope (SEM) at different times after the operation on 30 rats.Öğe Reversible postictal MRI change mimicking structural lesion(Elsevier, 2003) Hicdonmez, T; Utku, U; Turgut, N; Cobanoglu, S; Birgili, BA reversible change on magnetic resonance imaging (MRI) following generalised seizure mimicking a tumour-like structural lesion is reported in a 15-year-old patient. MRI revealed a left fronto-parietal cortico-subcortical lesion on T2 weighted images. The control MRI after 5 weeks from the onset revealed no pathological finding. The reversible MRI changes may be the result of a local brain swelling, and a defect of cerebral autoregulation during seizure at the site of activity. The transient nature of such neuroradiological findings have to be taken into consideration in the differential diagnosis because of their similar appearance on imaging to intrinsic brain tumours. (C) 2003 Elsevier B.V. All rights reserved.
