Karaaslan, BurakCeltikci, EmrahBulduk, Erkut BahaBorcek, Alp OzgunKurt, GokhanKaymaz, MemduhEmmez, HakanSurgical Sciences2024-07-052024-07-05202121019-514910.5137/1019-5149.JTN.30181-20.22-s2.0-85111299687https://doi.org/10.5137/1019-5149.JTN.30181-20.2https://hdl.handle.net/20.500.14411/1951Börcek, Alp Özgün/0000-0002-6222-382X; bulduk, erkut baha/0000-0002-8812-1290; Karaaslan, Burak/0000-0003-1015-396XAIM: 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.eninfo:eu-repo/semantics/openAccessBenign meningiomaRadiosurgeryCavernous sinusPetroclivalCerebellopontine angleReviewQ4Q3314519529WOS:00067280260000733978200