Biomedical subjects

Alper Baysefer

Publications and source records attributed to Alper Baysefer.

11 recordsLinked to original sources

PubMed2005

Composite type of split cord malformation: two different types at three different levels: case report.

The authors report on a child with a composite type of split cord malformation (SCM). The patient presented with symptoms of a common cold. The diagnosis of SCM was made based on computerized tomography and magnetic resonance (MR) imaging of whole spinal axis. The SCM was Type I at T-4 and T-5 and Type II at T-12, according to the classification developed by Pang. The child underwent resection of the splitting lesions and terminal filum release. No case of composite-type SCM reported to date contains documentation of such a malformation. Because of the possible neurological and urological problems, the authors recommend MR imaging of the whole spine be performed during/an evaluation for SCM.

Female↗

PubMed2004

The clinical and surgical aspects of spinal tumors in children.

A series of 20 pediatric patients underwent surgery for spinal tumor at the Department of Neurosurgery, Gulhane Military Medical Academy between 1995 and 2003. Motor weakness and reflex changes were the main initial signs in these patients. Epidural tumors and intradural-extramedullary tumors were in equal number, and total tumor removal was achieved in most of the patients without adjuvant treatment. Laminotomy was the main surgical method in 60% of the patients with spinal tumor, especially in children younger than 3 years of age.

Adolescent↗

PubMed2003

Split cord malformation in adults.

Although split cord malformations have been well documented in children, there is no consensus about their surgical indications and clinical course in adults because of their rarity. Medical records of nine young adult patients with split cord malformations were reviewed retrospectively. The most common complaint was radicular low back pain persisting more than 1 year, and the most common finding was hypertrichosis. Adult split cord malformation patients in our series had neither scoliosis nor foot deformities. Radiologically, all had low-situated conus medullaris. Eight of them underwent surgery. The radicular low back pain decreased in all the surgically treated patients at short-term follow-up but had not disappeared. Although pain originating from split cord malformations seems to be the most common surgical indication in adult patients and shows good short-term results, in our opinion long-term pain improvement is necessary for confirmation. According to our results, it seems that symptomatic young adults with split cord malformations are good candidates for complaint and deficit stabilization surgery.

Adult↗

PubMed2003

Fracture and lateral dislocation of the T12-L1 vertebrae without neurological deficit--case report.

A 21-year-old man suffered T12-L1 vertebrae fracture and lateral dislocation without neurological deficit. Computed tomography and magnetic resonance imaging demonstrated the fracture and lateral dislocation of the thoracolumbar spine. The injured spine was realigned with rods and screws, and bony fusion of the affected vertebrae was performed. Patients with thoracolumbar fracture-dislocation without neurological deficit may suffer unintended neurological injury secondary to maneuvers that cause further dislocation of the spine. Severe spinal injury without neurological deficit should be evaluated in detail, especially with spinal computed tomography. Internal fixation and reduction are recommended if the patient's condition is suitable for surgery.

Adult↗

PubMed2003

[Traumatic dissection of bilateral vertebral arteries].

58-year-old male comatose patient following a motor vehicle accident with a history of coronary bypass surgery 5 years ago has been presented. The patient was awake after the accident and he became comatose 30 minutes after the accident. The early diagnostic investigations showed no responsible cranial or spinal lesion. At the 2nd day of the accident, diffusion weighted magnetic resonance scans, magnetic resonance arteriography and digital subtraction arteriography revealed bilateral vertebral artery dissection at the second part of the vertebral arteries. Clinical, radiological features and treatment options of the vertebral artery dissection has been discussed with the ertinent literature.

Accidents, Traffic↗

PubMed2002

Dorsal bony septum: a split cord malformation variant.

Split cord malformations (SCMs) are rare spinal anomalies and their classification is still a matter of debate. There is no widespread consensus on the embryological basis of this entity. The unified theory, proposed by Pang et al. [Neurosurgery 1992;31:451-480], was an attempt to explain the embryogenetic mechanism as a basic error occurring around the time when the primitive neuroenteric canal closes. We report two unusual cases of SCMs with a dorsally situated bony spur. We analyzed the radiological, clinical and surgical features of the lesions and were not able to classify these cases according to the unified theory. Further embryological studies should be conducted to elucidate the mechanisms of occurrence of these lesions, and the dorsal bony septum variant should be considered in SCM surgery.

Child↗

PubMedDate not supplied

Congenital cranial and spinal dermal sinuses: a report of 3 cases.

Three cases of congenital dermal sinus are presented--2 female and 1 male. Frontal, thoracic, and lumbosacral congenital dermal sinuses were explored. All patients presented with skin findings, but no neurologic deficits. The case with frontal localization was associated with a corpus callosum lipoma and dermoid tumor, and the patient presented with recurrent meningitis. The case with sacral localization was associated with an epidermoid tumor. Morphogenetic, clinical, and radiologic aspects of these cases are discussed. The midline should be carefully examined whenever a child suffers from meningitis. Dermal sinus tracts should be excised prophylactically.

Cerebral Ventricle Neoplasms↗

PubMedDate not supplied

Surgical outcomes of ulnar nerve lesions in children. A retrospective clinical study.

The ulnar nerve provides the major motor innervation of the interosseous muscles of the hand and the flexor muscles of the wrist and the fourth and fifth digits. Injury is most common at the wrist, forearm or elbow, secondary to trauma or entrapment. Pediatric ulnar nerve lesions differ from adult lesions by their quicker axonal regeneration. Neural plasticity is also greater in children. We analyzed 21 pediatric patients with ulnar nerve lesion who underwent surgical treatment between 1995 and 2002 to determine if there were differences in the neurological outcome in terms of the type of lesion and surgery. Data showed that excellent results were found in 100% of the lesions treated by simple decompression and nearly 58% of the lesions treated by neurolysis. Good results were obtained in 33% of lesions treated by neurolysis. There were fair results for surgery performed in discontinuous lesions.

Adolescent↗

PubMedDate not supplied

Surgical outcomes of cerebellar tumors in children.

Cerebellar tumors in childhood are generally associated with a favorable outcome if they are managed appropriately. 27 cases of pediatric cerebellar tumors, operated over a 7-year period, are presented. Histopathological diagnoses were as follows: pilocytic astrocytoma (48.2%); medulloblastoma (22.2%); ependymoma (18.5%); fibrillary astrocytoma grade III (3.7%); cystic oligodendroglioma (3.7%), and hemangioblastoma (3.7%). Microscopic gross total resection was achieved in 16 (59.3%) of 27 cases. The total removal of pediatric cerebellar tumors without neurological deficit is possible with appropriate microsurgical techniques excluding brain stem invasion. The follow-up periods must be shorter if brain stem invasion exists. Radiotherapy and chemotherapy are the adjuvant therapies according to the pathological diagnosis and the patient's age.

Adolescent↗

PubMedDate not supplied

Congenital absence of internal carotid artery associated with hypogonadotropic hypogonadism--a case report.

Congenital absence of internal carotid artery is a relatively rare disorder. It may be an isolated entity or combined with other organ or system anomalies. Investigations of a 19-year-old male patient with hypogonadotropic hypogonadism and hypothyroidism suffering from intracerebral and subarachnoid hemorrhages showed absence of the left internal carotid artery. The association of endocrinologic disorders and congenital absence of internal carotid artery is discussed with the pertinent literature. In conclusion, association of the absence of internal carotid artery and hypogonadism is extremely rare. Patients with absence of internal carotid artery may also have intracerebral and subarachnoid hemorrhages and should be followed up closely.

Adult↗

PubMedDate not supplied

Pediatric cerebellar cystic oligodendroglioma: case report and literature review.

Oligodendrogliomas rarely occur in the posterior fossa of childhood and constitute approximately 1% of pediatric brain tumors. Only six pediatric posterior fossa oligodendroglioma cases have been reported to date and none of them were cystic. The authors present a seven-year-old girl with cystic, cerebellar midline localized tumor. A standard suboccipital craniectomy was performed and the tumor was histologically confirmed as oligodendroglioma. After operation the patient underwent radiation therapy and at one the-year follow-up, no recurrence of the tumor was observed.

Cerebellar Neoplasms↗