Browsing by Author "Karaaslan, Burak"
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Article Citation Count: 0Efficacy of Gamma-Knife Radiosurgery in Grade 2 and Grade 3Meningioma: A Single-Center, Long-Term Follow-Up Study(2021) Bulduk, Erkut Baha; Demirci, Harun; Karaaslan, Burak; Demirtaş, Oğuz Kağan; Emmez, Ömer Hakan; Kurt, Gökhan; Surgical SciencesObjectives: Gamma-Knife Radiosurgery (GKR) is a safe and effective treatment option in patients who have a high riskof complications in skull base and eloquent area-based tumors, in those to whom total surgery cannot be applied. Thepurpose was to analyze the results of radiosurgery in patients who underwent GKR for the residues or recurrent tumorsin high grade meningiomas. Methods: A retrospective screening was performed on patients who underwent GKR at Gazi University between 2004and 2018. The gender, mean age, location, volume, complications, size changes after GKR were noted. Results: A total of 35 (79.5%) patients were treated with Grade 2, and 9 (20.5%) were treated with Grade 3 meningio mas. The mean follow-up period was 48 months (3-108). The mean volume was noted as 9339 mm3 . The tumor controlrates after GKR were determined as 94% in Grade 2 and 55% in Grade 3 meningiomas. Conclusion: GKR can be applied as a safe and effective method for postoperative tumor control in high grade meningiomas.Review Citation Count: 2Stereotactic Radiosurgery after Subtotal Resection of Critically-Located Grade I Meningioma: A Single-Center Experience and Review of Literature(Turkish Neurosurgical Soc, 2021) Bulduk, Erkut Baha; Celtikci, Emrah; Bulduk, Erkut Baha; Borcek, Alp Ozgun; Kurt, Gokhan; Kaymaz, Memduh; Emmez, Hakan; Surgical SciencesAIM: To analyze the results of stereotactic radiosurgery in 295 patients with residual Grade I meningiomas located at parasellar region, petroclival region, cerebellopontine angle and parasagittal region. MATERIAL and METHODS: A total of 295 patients with Grade 1 residual Meningiomas (197 women, 98 men), who were treated by adjuvant radiosurgery in Gazi University Gamma Knife Center between 2004-2015 were analyzed. WHO Grade 2 and 3 meningiomas were not included in our study. Minimum radiological follow-up was 24 months. The median follow-up was 54 months. The tumor volume, location, treatment dose, morbidity, progression free survival and tumor control rate were analyzed. RESULTS: The median tumor volume was 5.2 cm(3) (0.04-39.7), median age was 50 (20-80), median dose was 14 Gy and tumor control rate was 94.5% (stationary in 85.0%, volume reduction in 9.5%). Increase in tumor volume was seen in 16 patients (5.5%) and re-operation was performed in 5 of them (1.6%). Stereotactic radiosurgery was performed again for 8 patients (2.7%).The location of the tumors was as follows: 39.3% parasellar region, 20% cerebellopontine angle, 13.6% petroclival and 27.1% was parasagittal, falcine or convexity. Major morbidities were detected in 6 (2%) patients. Minor morbidities were detected in 18 (6.1%) patients. CONCLUSION: Stereotactic radiosurgery is an effective and safe treatment modality for residual Grade I meningiomas.