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Intramedullary ependymomas are rare tumours but comprise the majority of intramedullary glial neoplasms in the adult. In this case report we introduced a 51 year old male patient with one month history of pain in the right arm and numbness in the right hand fingers. At neurological examination,there was a slight loss of sensory modalities along the right C6,C7,C8 dermatoms . Motor examination showed grade IV/V power in the right elbow flexion.Biceps and triceps tendon reflexes were diminished . In the sagittal Magnetic Resonance Images (MRI) there were a santrally localized mass lesion extending from C5 to T1 vertebra level and expanding the cord. There were also a milimetric syringomyelia cavity extending between T2-T4 vertebra .The tumour was removed totally . Pathological diagnosis was compatible with grade II ependymoma (World Health Organization Central Nervous System Tumour Classification 2007).No radiation therapy was advised to the patient. These tumours are benign, slow-growing lesions which are optimally treated with gross-total surgical resection without adjuvant therapy. Postoperative functional outcome is related to preoperative functional status. Hence, early diagnosis prior to symptomatic progressionis critical to the successful treatment of these tumours.

The aim of this experimental study was to evaluate the effect of omega-3 fatty acids solution in the prevention of the forming of peridural fibrotic tissue and adhesion in a rabbit hemilaminotomy model. This new experimental model was previously developed by the first author of this study. Twenty-one New Zealand white rabbits were used for this experiment. Seven of them were randomly selected as Control group and was named as Group I rabbits. The rabbits in this group were not operated and treated. The second group was Group II including 7 rabbits. This group was named as hemilaminotomy and untreated rabbits. Group III included 7 rabbits and named as Omega-3 treated group after hemilaminotomy procedure. In this group (Group III), 250 mg omega-3 solution was put in the hemilaminotomy area before closing the skin and fascia. Four weeks later from the operation rabbits were sacrificied by perfusion with 10% neutral buffered formalin solution. The lumbar spines were removed and immersed in 10% neutral buffered formalin for approximately 24 hours. Then each specimen was decalcified in 5% formic acid for approximately 3 weeks. Specimens were cut coronally for gross inspection. Peridural scar tissue on gross inspection in coronal sectioned specimens was graded into three grades. Grade I epidural scar tissue was scored with 1 point, Grade II with 2 point and Grade III with 3 point. The average score of hemilaminotomy sites without treatment was found as 2, 6 ± 0, 51. In the other hand the average score of hemilaminotomy sites with omega-3 fatty acids treatment was found as 1, 9 ± 0, 56. The difference between the treatment and non-treatment group was statistically significant. Omega-3 fatty acids solution seems an effective treatment modality in the prevention of peridural excessive scar tissue formation in the rabbit hemilaminotomy model.