E1.  Çolak İ, Türkmenoğlu O, Can M, Çavuşoğlu H,  Kaya RA , Kahyaoğlu O, Aydın Y: Steriotactic microsyringal resection of cerebral lesions (Oral presentation). Turkish Neurosurgical Society XX. Scientific Congress. Apr 28, 2006 Maritim Pine Beach Resort Hotel Belek-Antalya

E2.  Muscle M,  Kaya RA , Aydın Y: Additional aneurysms not detected by angiography and treated during surgery and diagnosed (Oral presentation). Turkish Neurosurgical Society XX. Scientific Congress. Mar 28, 2006 Maritim Pine Beach Resort Hotel Belek-Antalya.

E3.  Koç Ön,  Kaya RA,  Türkmenoğlu O, Muslim M, Aydin Y: Bilateral microdecompression technique and clinical results in a case of Lomber spinal stenosis (Oral presentation). Turkish Neurosurgical Society XIX. Scientific Congress, May 27-31, 2005 Mirage Park Resort Hotel Kemer-Antalya

E4.  Cavusoglu H,  Kaya RA,  Can M, Turkmenoglu O, Tuncer C, Sahin Y, Aydin Y. Anterior effects of contralateral cervical microdiscectomy on radiological and clinical outcomes (Oral presentation). Turkish Neurosurgical Society XIX. Scientific Congress, May 27-31, 2005 Mirage Park Resort Hotel Kemer-Antalya

E5.  Aydin Y,  Kumar R,  Cavusoglu Hi, Coach FRONT, Türkmenoğlu ON, Sahin Y thoracic and lumbar vertebrae anterolateral approach: Indications, techniques and results (Oral presentation). Turkish Neurosurgical Society XVIII. Scientific Congress, 22-26 May 2004, Mirage Park Resort Hotel, Kemer-Antalya

E6.  Kaya RA,  Kilinc B, Muslim M, Aydın Y: Stabilization in subaxial cervical spinal injuries (Verbal Report). Turkish Neurosurgical Society XVII. Scientific Congress, 20-24 May 2003, Belek Antalya

E7.  Muscular M, Cavusoglu H,  Kaya RA, Turkmenoglu O, Aydin Y: Endocrinological and ophthalmologic outcomes of meningiomas of the tubercle sella of the pterional approach. Turkish Neurosurgical Society XVII. Scientific Congress, 20-24 May 2003, Belek Antalya

E8.  Kaya RA,  Türkmenoğlu O, Çavuşoğlu H, Şahin Y, Aydin Y: Upper thoracal and cervicothoracic composite Vertebra fractures (Verbal Report). Turkish Neurosurgical Society XV. Scientific Congress, 22-26 May 2001, Antalya

E9. Kaya RA,  Duman H, Turkmenoglu O, Şahin Y, Aydin Y: Modified transpedicular approach in thoracolumbar and Lomber Burst fractures (Oral presentation). Turkish Neurosurgical Society XV. Scientific Congress, 22-26 May 2001, Antalya

E10.  Turkmen CS, Ziyal IM,  Kaya RA  : Interkorporal fixator applications in thoracolumbar vertebra pathologies (Oral presentation). Turkish Neurosurgical Society National Congress 17-21 May 2000, Antalya

E11.  Turkmen CS, Ziyal I,  Kaya RA,  Turkmenoglu O: Practice and results in intercorporal fixation (Oral presentation). Turkish Neurosurgical Society National Congress 15-19 May 1998, Antalya

E12. Kaya RA,  Kılınçoğlu BF, Hiçdönmez T, Ziyal I, Aydin Y: Experience with our clinic approach to myelosizis cases (oral presentation). National Congress of Turkish Neurosurgical Society 24-28 May 1996, Çeşme

E13. Kaya RA,  Kılınçoğlu BF, Hiçdönmez T, Witness C, Aydın Y: Spinal enterogenic cyst (Oral presentation). National Congress of Turkish Neurosurgical Society 24-28 May 1996, Çeşme

E14. Ziyal MI, Muslim M, Turkmen C,  Kaya RA,  Shepherd TE, Witness C, Aydin Y: Metastatic Brain Tumors (Oral Presentation). National Congress of Turkish Neurosurgical Society 24-28 May 1996, Çeşme

E15.  Aydın Y, Ziyal M, Duman H, Türey A,  Kaya RA,  Türkmen C, Şahin Y: Multiple intracranial aneurysms (Oral presentation). National Congress of Turkish Neurosurgical Society 24-28 May 1996, Çeşme

E16.  Ziyal MI,  Kaya RA,  Turkmen C, Erdmanmez T, Coban E, Aydin Y: Posttraumatic leptomeningeal cysts (Oral presentation). Turkish Neurosurgical Society National Congress, 9-14 April 1995 Çeşme

E17.  Erdoğan G, Ziyal MI,  Kaya RA,  Coban TE, Bayhan M: Cervical traumas (oral presentation). National Congress of Turkish Neurosurgical Society 8-12 May 1994

E18.  Erdoğan G,  Kaya RA,  Ziyal M, Çağlıaydın Ö, Bayhan M, Rizeli Y: Investigation of the effectiveness of harrington rods in the treatment of thoracolumbar fractures (Oral Presentation). National Congress of Turkish Neurosurgical Society 8-12 May 1994

E19. Türkmen C, Yalçınere,  Kaya RA,  Türeyu, Türkmen B, Rizeli Y: Evaluation of prognosis of central nervous system tumors by DNA content analysis (Oral presentation). National Congress of Turkish Neurosurgical Society 8-12 May 1994