Ahmet Hilmi Kaya

Professor · Neurosurgery

Areas of expertise: Neurosurgery Department

NAME: Ahmet Hilmi Kaya, M.D. Prof.
ADDRESS: Anadolu Medical Center
Department of Neurosurgery
Gebze, Kocaeli - TURKEY
email: ahmet.kaya@anadolusaglik.org
EDUCATION:
1989-1996 Istanbul University, Cerrahpaşa Faculty of Medicine
POSTGRADUATE TRAINING
1996-2003 – Department of Neurosurgery, Cerrahpaşa Faculty of Medicine, Istanbul University
2005-2011 – Department of Neurosurgery, Faculty of Medicine, Ondokuz Mayıs University, awarded the title of Associate Professor
2015 – Awarded the title of Professor at Gelişim University, Istanbul
PROFESSIONAL EXPERIENCE:
Rank Department - Institution Year
Researcher (physician) Faculty of Medicine, Marmara University, Department of Neurosurgery 1996–1997
Researcher (physician) Cerrahpaşa Faculty of Medicine, Istanbul University, Department of Neurosurgery 1997–2003
Specialist Erdem Private Hospital 2004-2005
Assistant Professor Faculty of Medicine, Ondokuz Mayıs University, Department of Neurosurgery 2005-2010
Observer Maastricht University, Cellular Neuroscience, Netherlands 2007
Observer Maastricht University, Cellular Neuroscience, Netherlands 2009
Assistant Professor Faculty of Medicine, Ondokuz Mayıs University, Department of Neurosurgery 2010-2011
Assistant Professor
Assistant Professor Medicana International Hospital, Samsun
Anadolu Medical Center, Gebze 2011-2012
2012-2016
Professor Faculty of Health Sciences, Gelişim University 2015-2019
Professor Anadolu Medical Center, Gebze 2015-2016
Professor
Professor
Professor Gaziosmanpaşa Private Hospital
Adatıp Private Hospital
Koşuyolu Hospital, Yeditepe University 2016-2017
2017-2018
2018-2026
Professor Anadolu Medical Center, Gebze 2026 - present

Doctoral theses / creative works supervised:
Arif Topal, "Changes in cerebral metabolic activity after lesioning of the subthalamic nucleus in rats with a Parkinson's disease model", medical specialty thesis, Ondokuz Mayıs University, Faculty of Medicine, Department of Neurosurgery, Samsun, 2008
Roles held in projects:
"Changes in the metabolic activity of the dorsal raphe nucleus after lesioning of the subthalamic nucleus in rats with a Parkinson's disease model", Ondokuz Mayıs University, Scientific Research Projects Commission, Samsun, project no. T.597, project leader, 2008
"Changes in cerebral metabolic activity after lesioning of the globus pallidus (entopeduncular nucleus) in rats with a Parkinson's disease model", Ondokuz Mayıs University, Scientific Research Projects Commission, Samsun, project no. T.597, research assistant, 2008
AREAS OF MEDICAL INTEREST:
• Spinal tumours
• Vertebral slippage (spondylolisthesis) (Spinal Slippage)
• Spinal cord tumours
• Spinal canal stenosis
• Spinal instrumentation
• Surgery for Parkinson's disease and movement disorders (deep brain stimulation)
• Essential tremor surgery
• Herniated disc (lumbar region)
• Herniated disc (cervical region)
• Stereotactic biopsy
• Neuroanatomy
• Functional and stereotactic neurosurgery
• Skull base surgery and brain tumours
• Vascular pathologies of the central nervous system
• Spinal surgery
Professional awards:

1. Third research prize (2nd National Congress of the Neurosurgery Association, 2006)
2. Overseas scholarship programme award of the Turkish Neurosurgical Society, 2008
3. Seventh place in the evaluation of presentations of the year at the 22nd Scientific Congress of the Turkish Neurosurgical Society, 2008
4. Aysima Altınok Thesis Award of the Turkish Neurosurgical Society, 2009
5. Arif Topal, "Changes in cerebral metabolic activity after lesioning of the subthalamic nucleus in rats with a Parkinson's disease model", medical specialty thesis, Ondokuz Mayıs University, Faculty of Medicine, Department of Neurosurgery, Samsun, 2008. Thesis supervisor: Ahmet Hilmi Kaya
6. Third place in the evaluation of presentations of the year at the 23rd Scientific Congress of the Turkish Neurosurgical Society, 2009
7. Seventh place among the best presentations of the year at the 23rd Scientific Congress of the Turkish Neurosurgical Society, 2009

Professional memberships:

• Turkish Neurosurgical Society
• Turkish Medical Association

International publications:

A1. Ozyurt, E., T. Tanriverdi, A.H. Kaya, MY. Kaynar, T. Kacira and G. Girisken, "Rapidly progressing chondromyxoid fibroma of the sellar region: case report and review of the literature", Neurosurgery Q, 12, 307-311 (2002).
A2. Ozyurt, E., A.H. Kaya, T. Tanriverdi, S. Tuzgen, SA. Oguzoglu, MH. Hanefioglu and C. Kuday, "New classification of insular tumours and surgical results in 40 patients", Neurosurgery Q, 13, 138-148 (2003).
A3. Tuzgen, S., B. Canbaz, A.H. Kaya, G.Z. Sanus, C. Kuday, M. Memis and B. Oz, "Experimental comparison of rapid and slow occlusion of the sagittal sinus in dogs", Neurol India, 51, 482-486 (2003).
A4. Kaya, A.H., T. Tanriverdi, M.Y. Kaynar, P. Erdincler and M. Uzel, "Early and isolated origin of the angular artery from the middle cerebral artery", Neurol India, 51, 425-427 (2003).
A5. Canbaz, B., T. Tanriverdi, A.H. Kaya and S. Tuzgen, "Pott's tumour: a rare clinical entity", Lancet Infect Dis, 3, 721 (2003).
A6. Tuzgen, S., A.H. Kaya, D. Erdincler, S.A. Oguzoglu, O. Ulu and S. Saip, "Two cases of neuro-Behçet's disease mimicking a brain tumour", Neurol India, 51, 376-378 (2003).
A7. Canbaz, B., T. Tanriverdi, E. Ocal and A.H. Kaya, "Endolymphatic sac tumour: a rare differential diagnosis of lesions of the cerebellopontine angle", Neurosurgery Q, 14, 1-4 (2004).
A8. Tasdemiroglu, E., A.H. Kaya, S. Bek, C.B. Emir, A. Sengoz, O. Kilickesmez and I. Mansuroglu, "Neurological complications of cancer: part I: metastases of the central nervous system", Neurosurgery Q, 14, 71-83 (2004).
A9. Erdincler, P., A.H. Kaya, A. Kafadar, B. Canbaz and C. Kuday, "Bilateral linear peninsula-shaped craniectomy in mild craniosynostosis: indications, technique and long-term results", J Craniomaxillofac Surg, 32, 64-70 (2004).
A10. Tasdemiroglu, E., A.H. Kaya, S. Bek, C.B. Emir, A. Sengoz, O. Kilickesmez and I. Mansuroglu, "Neurological complications of cancer: part II: vascular, infectious, paraneoplastic, neuromuscular and treatment-related complications", Neurosurgery Q, 14, 133-153 (2004).
A11. Tasdemiroglu, E. and A.H. Kaya, "Syndromes of inappropriate (ectopic) secretion of hypothalamic and pituitary hormones", Neurosurgery Q, 14, 161-167 (2004).
A12. Kaya, A.H., B. Sam, F. Celik and U. Ture, "Fast-setting coloured silicone mixture for cerebral injection at autopsy: technical report", Neurosurg Rev, 29, 322-336 (2006).
A13. Senel, A., A. Dagcinar, A.H. Kaya and E. Kuruoglu, "Localised spontaneous subarachnoid haemorrhage as the first manifestation of cerebral venous thrombosis", Neurosurgery Quarterly, 16, 117-120 (2006).
A14. Dagcinar, A., A.H. Kaya, A. Senel and F. Celik, "Sponge fragments used as retractors in neurosurgical procedures", Surg Neurol, 67, 493-495 (2007).
A15. Dagcinar, A., A.H. Kaya, M.E. Aydin, C. Kopuz, A. Senel, M.T. Demir, U. Corumlu, F. Celik and B. Sam, "The superior cerebellar artery: an anatomical study with a review of the literature", Neurosurgery Q, 17, 235-240 (2007).
A16. Senel, A., A.H. Kaya, E. Kuruoglu and F. Celik, "Circumferential stabilisation with phantom screws after posterior transpedicular resection of spinal metastases", Neurosurg Rev, 30, 131-137 (2007).
A17. Dagcinar, A., A.H. Kaya, H.A. Tasdemir, E. Kuruoglu, Z. Sabancilar and Aydın Sav, "Ganglioneurocytoma of the fourth ventricle presenting with cerebellar epilepsy: case report and review of the literature", Eur J Paediatr Neurol, 11, 257-260 (2007).
A18. Kaya, A.H., A. Dagcinar, I. Cebeci, A. Senel and F. Celik, "Plaster body model for stereotactic localisation", Surg Neurol, 68, 544-546 (2007).
A19. Kaya, A.H., A. Dagcinar, A. Topal, A. Şenel and O. Iyigun, "Stereotaxy-guided craniotomy for transsulcal exposure of small subcortical lesions located close to eloquent areas", Neurosurgery Q, 18, 130-132 (2008).
A20. Kaya, A.H., A. Dagcinar, F. Celik and A. Senel, "A simple technique for removing a broken pedicle screw using an ordinary wrench", European Spine Journal, 17, 1116-1118 (2008).
A21. Kaya, A.H., R. Vlamings, S. Tan, L.W. Lim, P.J. Magill, H.W.M. Steinbusch, V. Visser-Vandewalle, T. Sharp and Y. Temel, "Increased electrical and metabolic activity in the dorsal raphe nucleus of Parkinsonian rats", Brain Res, 1221, 93-97 (2008).
A22. Kaya, A.H., A. Ulus, Y. Bayri, A. Topal, S. Gun, B. Kandemir, A. Dagcinar, A. Senel and O. Iyigun, "Absence of oestrogen and progesterone receptors in cerebral cavernomas: a preliminary immunohistochemical study", Surg Neurol, 72, 263-265 (2009).
A23. Kaya, A.H., A. Dagcinar, M.O. Ulu, A. Topal, Y. Bayri, A. Ulus, C. Kopuz and B. Sam, "Perforating branches of the P1 segment of the posterior cerebral artery: an anatomical study", J Clin Neurosci, 17, 80-84 (2010).
A24. Kopuz, C., Demir, M.T., Çorumlu, U., Aydin, M.E., Korkmaz, A., Çiftçioğlu, E., A.H. Kaya, "Morphological study of the ventriculus terminalis in the newborn: embryological and clinical implications", Neurosurgery Quarterly, 20(1):31-35, March 2010.
A25. Kopuz, C., Aydin, M.E., Kale, A., Demir, M.T., Çorumlu, U., A.H. Kaya, "Termination of the superior sagittal sinus and drainage patterns of the lateral and occipital veins at the confluence of sinuses in the newborn: clinical and embryological implications", Surg Radiol Anat, 2010.
A26. Ulus, A., A.H. Kaya, Y. Bayri, A. Dagcinar, H. Sataloglu, A. Senel, "Removal of a polyaxial screw", Cen Eur Neurosurg, 2010.
A27. Aydin, M.E., Kopuz, C., Demir, M.T., Çorumlu, U., A.H. Kaya, "Location of the pterion in newborn cadavers: a morphometric study", Surg Radiol Anat, 2010.
A28. Jahanshahi, A., Vlamings, R., Kaya, A.H., Lim, L.W., Janssen, M.L., Tan, S., Visser-Vandewalle, V., Steinbusch, H.W., Temel, Y., "Hyperdopaminergic state in an experimental model of Huntington's disease", J Neuropathol Exp Neurol, 2010.
A29. Aydın, M.E., Kaya, A.H., Kopuz, C., Demir, M.T., Çorumlu, U., Dagcinar, A., "Bilateral origin of the superior cerebellar arteries from the posterior cerebral arteries and signs of an embryological basis", Anat Cell Biol, 2011.
A30. Türe, U., Harput, M.V., Kaya, A.H., Baimedi, P., Firat, Z., Türe, H., Bingöl, C.A., "Paramedian supracerebellar-transtentorial approach along the whole length of the mediobasal temporal region: anatomical and clinical study", J Neurosurg, 2012.
A31. Ulus, A., Kuruoglu, E., Ozdemir, S.M., Yapici, O., Sensoy, G., Yarar, E., Kaya, A.H., Senel, A., Dagcinar, A., "Cerebrospinal fluid hydrothorax: neither thoracic migration of the peritoneal catheter nor ascites. Case report and review of the literature", Childs Nerv Syst, 2012.
A32. Ulus, A., Kaya, A.H., Sabancılar, Z., Dağcılar, A., Şenel, A., "Laminectomy: a new Kerrison rongeur for partial hemilaminectomy", Neurosurgery Quarterly, 2012.
A33. Kaya, A.H., Erdoğan, H., Taşdemiroğlu, E., "In search of evidence on stroke in animal models: a review of the differences", Turkish Neurosurgery, 2017.
A34. Erdoğan, H., Kaya, A.H., Bilal, K., Aziz, Y., Erol, T., "Atypical location of a calcified dysembryoplastic neuroepithelial tumour (DNET)", Austin Journal of Neural & Neuroscience, 2017.
A35. Erdoğan, H., Antar, V., Kaya, A.H., Fırat, L., Kubilay, T., et al., "Animal models of autism spectrum disorders", Journal of Neurology & Stroke, 2017.
A36. Erdoğan, H., Altun, A., Kuruoğlu, E., Kaya, A.H., Dağcılar, A., "Difficulties in distal positioning of the ventriculoatrial catheter in infants and young children", Turkish Neurosurgery, 2017.
A37. Bakirezer, S.D., Yaltırık, C.K., Kaya, A.H., Yılmaz, S.G., Özdoğan, S., Billur, D., İşbir, T., "Evaluation of glutathione reductase and malondialdehyde levels in patients with lumbar disc degeneration", In Vivo, 2019.
A38. Ulus, A., Kaya, A.H., Güvenç, D., Aksoy, A., Şenel, A., "Effect of early myelotomy on glutamate concentration in a rat spinal cord injury model", Turkish Neurosurgery, 2022.
A39. Ulus, A., Kaya, A.H., Şenel, A., "Iatrogenic lower limb length inequality can lead to low back pain due to scoliosis", Journal of Experimental and Clinical Medicine, 2022.
B. Presentations (international)

B1. Ozyurt, E., T. Tanrıverdi, A.H. Kaya, C. Ozkara, N. Yeni, N. Karaagac, A. Dervent, E. Eskazan and C. Kuday, "Surgical results of epileptic patients with medial temporal lesions of tumoural and non-tumoural origin, evaluated by a non-invasive method", 7th Mediterranean Epilepsy Conference, 59, Athens, 2001.
B2. Ozyurt, E., S.A. Oguzoglu, A.H. Kaya, T. Tanrıverdi and C. Kuday, "New classification of insular tumours and surgical results in 40 patients", International Neurosurgery Conference, 2, Shanghai, 2002.
B3. Sanus, G.Z., A.H. Kaya, T. Tanrıverdi, T. Kacire, Z. Akar, E. Ozyurt and C. Kuday, "Surgical results of petroclival meningiomas", 4th International Congress on the Cerebral Venous System and 4th International Congress on Meningiomas, jointly with the annual meeting of the Turkish Neurosurgical Society, 68, İstanbul, 2002.
B4. Kaya, A.H., T. Tanriverdi, T. Kacira, M.Y. Kaynar, E. Ozyurt, N. Ciplak and C. Kuday, "Surgical results of foramen magnum meningiomas", 4th International Congress on the Cerebral Venous System and 4th International Congress on Meningiomas, jointly with the annual meeting of the Turkish Neurosurgical Society, 68, İstanbul, 2002.
B5. Tanrıverdi, T., A.H. Kaya, T. Kacira, S.A. Oguzoglu, Z. Akar, E. Ozyurt and C. Kuday, "Surgical results of sphenoid wing meningiomas", 4th International Congress on the Cerebral Venous System and 4th International Congress on Meningiomas, jointly with the annual meeting of the Turkish Neurosurgical Society, 54, İstanbul, 2002.
B6. Kafadar, A., M.Y. Kaynar, T. Tanriverdi, A.H. Kaya, E. Ozyurt and C. Kuday, "Surgical results of parasagittal and falx meningiomas", 4th International Congress on the Cerebral Venous System and 4th International Congress on Meningiomas, jointly with the annual meeting of the Turkish Neurosurgical Society, 57, İstanbul, 2002.
B7. Ozyurt, E., S.A. Oguzoglu, M.O. Ulu, A.H. Kaya, T. Tanrıverdi, M. Uzan and C. Kuday, "Limbic and paralimbic tumours. Surgical results and retrospective analysis of 187 patients", 3rd International Neurosurgery Conference, 3rd meeting of the Asian Society of Neuro-Oncology, 7, Shanghai, 2003.
B8. Kopuz, C., M.E. Aydin, A. Kale, M.T. Demir, U. Corumlu and A.H. Kaya, "Common variations of the dural sinuses at the confluence of sinuses in the newborn", 1st International Congress of the Serbian Anatomical Society with international participation, 34, Novi Sad, 2006.
B9. Aydin, M.E., C. Kopuz, M.T. Demir, U. Corumlu and A.H. Kaya, "Location of the pterion in newborn cadavers: a morphometric study", 1st International Congress of the Serbian Anatomical Society with international participation, 164, Novi Sad, 2006.
B10. Kopuz, C., M.E. Aydin, U. Corumlu, M.T. Demir and A.H. Kaya, "Anatomy of the accessory atlanto-axial ligament in the newborn", 1st International Congress of the Serbian Anatomical Society with international participation, 125, Novi Sad, 2006.
B11. Ture, U., A.H. Kaya, G. Karlikaya, Z. Fırat, H. Ture, C.A. Bingol and Ilhami Kovanlıkaya, "Value of fibre tractography using a 3 Tesla MRI system in midbrain surgery", AANS Annual Meeting, J Neurosurg Vol 108, p. A852, Chicago, 2008.
B12. Kaya, A.H., R. Vlamings, S. Tan, L.W. Lim, P. Magill, H.W. Steinbusch, V. Visser-Wandewalle, T. Sharp, Y. Temel, "Increased electrical and metabolic activity in the dorsal raphe nucleus of Parkinsonian rats", 18th Congress of the European Society for Stereotactic and Functional Neurosurgery, Acta Neurochir (Wien) Vol 150, p. 958, Rimini, 2008.
B13. Cemile Ceylan, Andaç Hamamcı, Nadir Küçük, Kutlay Karaman, Ahmet Hilmi Kaya, Gozde Onal, Kayıhan Engin: "Robotic stereotactic radiosurgery of acoustic neuromas: prediction of tumour control by determining the necrotic zone within the tumour volume", 11th meeting of the Asian Society of Neuro-Oncology, 2014, İstanbul.
B14. Cemile Ceylan, Ahmet Hilmi Kaya, Hande Baş Ayata, Ayhan K1h9, Timur Ugur, Metin Gilden, Kayıhan Engin: "CyberKnife stereotactic radiosurgery of intracranial meningiomas", 11th meeting of the Asian Society of Neuro-Oncology, 2014, İstanbul.
C. Book chapters
C1. Ture, U., A.H. Kaya, C.A. Bingöl, "Selective amygdalohippocampectomy via the transsylvian approach", Epilepsy Surgery in Children: Preoperative Evaluation and Surgical Treatment, edited by O. Cataltepe and G. Jallo, Thieme, 2010.
C2. Ture, U., A.H. Kaya, "Surgical anatomy of the craniovertebral junction", Pathology and Surgery around the Vertebral Artery, edited by B. George, M. Bruneau and R.F. Spetzler, Springer, 2012.
C3. Ture, U., A.H. Kaya, "Principles of management of cavernous malformations in functional areas", Cavernous Malformations of the Nervous System, edited by Daniele Rigamonti, Cambridge University Press, 2011.
C4. Ture, U., Kaya, A.H., "Combined approach in craniopharyngiomas", in: Controversies in Neurosurgery II, edited by Al-Mefty O., Thieme, New York, 2013: 157-163.
D. Publications (national):
D1. Erkol, G., E. Yılmaz, A.H. Kaya, M.A. Akalın, M.Y. Kaynar, A. Altıntaş, E. Erdoğan, Ö. Ünsal, C. Kuday and A. Siva, "Association between human leukocyte antigens and neuroepithelial tumours in the Turkish population: preliminary results", Turk J Immunol, 5, 1-4 (2000).
D2. Özyurt, E., Ş.A. Oğuzoğlu, A.H. Kaya, T. Tanrıverdi and T. Kaçıra, "Solitary Langerhans cell histiocytosis of the occipital lobe: case report", Turkish Neurosurgery, 12, 102-106 (2002).
D3. Tüzgen, S., M.Y. Kaynar, T. Tanrıverdi, A.H. Kaya and E. Özyurt, "Multifocal medulloblastoma: brief report", Turkish Neurosurgery, 12, 113-115 (2002).
D4. Özyurt, E., Ş.A. Oğuzoğlu, A.H. Kaya, T. Tanrıverdi, R. Enar and D. Uçak, "Surgical treatment of essential hypertension resistant to medical treatment: presentation of two case reports", Anadolu Kardiyoloji Dergisi, 2, 40-44 (2002).
D5. Tüzgen, S., A.H. Kaya, G.Z. Sanus and Z. Akar, "Acute spontaneous spinal epidural haematomas", Journal of Neurological Sciences (Turkish), 19, 4 (2002).
D6. Cesur, B., A.H. Kaya, Y. Bayri, A. Ulus, A. Dağçınar and A. Şenel, "Intracranial aneurysms of childhood; case report and review of the literature", Türk Nöroşirürji Dergisi, 18, 128-133 (2008).
D7. Y. Bayri, A.K. Ulaş, A. Ulus, A.H. Kaya, A. Dağçınar, "Iatrogenic calcified/ossified chronic epidural haematoma: case report", Sinir Sistemi Cerrahisi Derg, 2(2):91-94, 2009.
D8. A.H. Kaya, Ture U., "Sphenoid wing meningiomas", Türk Nöroşirürji Dergisi, 21(2): 131-136, 2011.
D9. A.H. Kaya, Dağçınar A., "Surgical approaches to epidermoid tumours of the posterior cranial fossa", Turkish Neurosurgery Journal, 27(1): 82-85, 2017.
E. Presentations (national):

E1. Tüzgen, S., Z. Sanus, B. Canbaz, A.H. Kaya, Z. Akar and C. Kuday, "Adult hydrocephalus", 12th Scientific Congress of the Turkish Neurosurgical Society, 247, Antalya, 1998.
E2. Sanus, Z., M. Uzan, A.H. Kaya, B. Canbaz, E. Özyurt and C. Kuday, "Choice of treatment and results in late post-traumatic facial paralysis", 12th Scientific Congress of the Turkish Neurosurgical Society, 247–248, Antalya, 1998.
E3. Kaya, A.H., İ. Alver, P. Erdinçler, T. Tanrıverdi, M.Y. Kaynar and N. Çıplak, "Posterior fossa tumours in the paediatric population", 14th Scientific Congress of the Turkish Neurosurgical Society, 55, Antalya, 2000.
E4. Kaya, A.H., R. Dashti, M.Y. Kaynar, B. Canbaz, E. Özyurt and C. Kuday, "Surgical results in intracranial cavernous malformations", 14th Scientific Congress of the Turkish Neurosurgical Society, 127–128, Antalya, 2000.
E5. Özyurt, E., A.H. Kaya, T. Tanrıverdi, M. Uzan, S. Tüzgen and C. Kuday, "Surgical results in insular tumours", 15th Scientific Congress of the Turkish Neurosurgical Society, 162–163, Antalya, 2001.
E6. Özyurt, E., T. Tanrıverdi, A.H. Kaya, M. Uzan, S. Tüzgen and C. Kuday, "Microvascular decompression in a patient with hypertension resistant to treatment", 15th Scientific Congress of the Turkish Neurosurgical Society, Antalya, 2001.
E7. Özyurt, E., A.H. Kaya, T. Tanrıverdi, Ç. Özkara, N. Yeni, N. Karaağaç, A. Dervent, E. Eşkazan and C. Kuday, "Surgical results in epileptic patients with medial temporal lesions of tumoural and non-tumoural origin, evaluated by non-invasive methods", 37th National Congress of Neurology, 102, Antalya, 2001.
E8. Kaya, A.H., P. Erdinçler, H. Ak, N. Çıplak and C. Kuday, "Bilateral peninsula-shaped craniotomy: method and applications", 16th Scientific Congress of the Turkish Neurosurgical Society, 217, İstanbul, 2002.
E9. Tüzgen, S., A.H. Kaya, H. Hanımoğlu, B. Canbaz, B. Öz, E. Özyurt and C. Kuday, "Behaviour patterns of atypical meningiomas", 16th Scientific Congress of the Turkish Neurosurgical Society, 182, İstanbul, 2002.
E10. Kaya, A.H., B. Sam, E. Özyurt and C. Kuday, "Study of the anatomy of the cerebral arteries by silicone injection in cadavers: technical report", 18th Scientific Congress of the Turkish Neurosurgical Society, 97, Antalya, 2004.
E11. Şenel, A., A. Dağçınar, A.H. Kaya, E. Kuruoğlu, A. Topal and F. Çelik, "Craniovertebral junction anomaly due to acromesomelic skeletal dysplasia: presentation of a case report", 20th Scientific Congress of the Turkish Neurosurgical Society, 100–101, Antalya, 2006.
E12. Dağçınar, A., A.H. Kaya, A.H. Taşdemir, E. Kuruoğlu, Z. Sabancılar, A. Şenel and F. Çelik, "Case of gangliocytoma located in the fourth ventricle causing cerebellar epilepsy: presentation of a case report", 20th Scientific Congress of the Turkish Neurosurgical Society, 100, Antalya, 2006.
E13. Dağçınar, A., A.H. Kaya, A. Şenel, E. Kuruoğlu and F. Çelik, "Development of SCIWORA at the craniovertebral junction in a case of Chiari I: presentation of a case report", 20th Scientific Congress of the Turkish Neurosurgical Society, 182, Antalya, 2006.
E14. Kaya, A.H., M.E. Aydın, C. Kopuz, A. Dağçınar, A. Şenel, M. Demir, E. Kuruoğlu, U. Çorumlu, A. Topal and F. Çelik, "Anatomy of the anterior cerebral artery", 20th Scientific Congress of the Turkish Neurosurgical Society, 162, Antalya, 2006.
E15. Kaya, A.H., C. Kopuz, A. Dağçınar, M.E. Aydın, A. Şenel, M. Demir, E. Kuruoğlu, U. Çorumlu, Z. Sabancılar and F. Çelik, "Distal anatomy of the middle cerebral artery", 20th Scientific Congress of the Turkish Neurosurgical Society, 162, Antalya, 2006.
E16. Şenel, A., A.H. Kaya, E. Kuruoğlu and F. Çelik, "Stabilisation with ghost screw-type fixators in spinal metastases", 20th Scientific Congress of the Turkish Neurosurgical Society, 54–55, Antalya, 2006.
E17. Şenel, A., A. Dağçınar, A.H. Kaya, E. Kuruoğlu, A. Topal and F. Çelik, "Role of ligamentotaxis in thoracolumbar trauma", 20th Scientific Congress of the Turkish Neurosurgical Society, 146, Antalya, 2006.
E18. Şenel, A., A. Dağçınar, A.H. Kaya, E. Kuruoğlu, Z. Sabancılar and F. Çelik, "Use of expandable cages in pathologies of the cervical vertebrae", 20th Scientific Congress of the Turkish Neurosurgical Society, 146, Antalya, 2006.
E19. Kaya, A.H., A. Dağçınar, İ. Cebeci, A. Şenel and F. Çelik, "Plaster head training model for stereotactic localisation", 21st Scientific Congress of the Turkish Neurosurgical Society, 79, Antalya, 2007.
E20. Kaya, A.H., A. Dağçınar, A. Topal, A. Şenel and F. Çelik, "Transsulcal approach to subcortical lesions by stereotaxy-guided craniotomy", 21st Scientific Congress of the Turkish Neurosurgical Society, 78, Antalya, 2007.
E21. Dağçınar, A., A.H. Kaya, M.E. Aydın, C. Kopuz, A. Şenel, M.T. Demir, U. Çorumlu and B. Sam, "The superior cerebellar artery: an anatomical study", 21st Scientific Congress of the Turkish Neurosurgical Society, 49, Antalya, 2007.
E22. Dağçınar, A., A.H. Kaya, A. Şenel and F. Çelik, "Use of sponge fragments as retractors in neurosurgical procedures", 21st Scientific Congress of the Turkish Neurosurgical Society, 169, Antalya, 2007.
E23. Kaya, A.H., A. Ulus, A. Dağçınar, F. Çelik and A. Şenel, "Laminatome: a Kerrison instrument designed for laminotomy", 22nd Scientific Congress of the Turkish Neurosurgical Society, 73, Antalya, 2008.
E24. Kaya, A.H., A. Dağçınar, F. Çelik and A. Şenel, "Practical extractor for removing broken pedicle screws", 22nd Scientific Congress of the Turkish Neurosurgical Society, 73–74, Antalya, 2008.
E25. Kaya, A.H., A. Ulus, Y. Bayri, A. Topal, S. Gün, B. Kandemir, A. Dağçınar, A. Şenel and Ö. İyigün, "Absence of oestrogen and progesterone receptors in cerebral cavernomas: a preliminary immunohistochemical study", 22nd Scientific Congress of the Turkish Neurosurgical Society, 59, Antalya, 2008.
E26. Kaya, A.H., R. Vlamings, S. Tan, L.W. Lim, P. Magill, H.W. Steinbusch, V. Visser-Wandewalle, T. Sharp, Y. Temel, "Increased electrical and metabolic activity in the dorsal raphe nucleus of Parkinsonian rats", 22nd Scientific Congress of the Turkish Neurosurgical Society, 32, Antalya, 2008.
E27. Cesur, B., A.H. Kaya, Y. Bayri, A. Ulus, A. Dağçınar and A. Şenel, "Intracranial aneurysms in children: presentation of a case report and review of the literature", 22nd Scientific Congress of the Turkish Neurosurgical Society, 85, Antalya, 2008.
E28. Bayri, Y., A.K. Ulaş, A.H. Kaya, A. Ulus, A. Dağçınar and F. Çelik, "Calcification of a chronic epidural haematoma after surgery for a large intracranial mass: presentation of a case report", 22nd Scientific Congress of the Turkish Neurosurgical Society, 85–86, Antalya, 2008.
E29. Ulus, A., A.H. Kaya, Y. Bayri, A. Dağçınar, F. Çelik and A. Şenel, "Misuse of interspinous devices and complications", 22nd Scientific Congress of the Turkish Neurosurgical Society, 94, Antalya, 2008.
E30. Kaya, A.H., Dağçınar A., Ulu M.O., Topal A., Bayri Y., Ulus A., Kopuz C., Şam B., "Perforating branches of the P1 segment of the posterior cerebral artery: a neuroanatomical study", 23rd Scientific Congress of the Turkish Neurosurgical Society, Cyprus, April 2009.
E31. Topal, A., Z. Sabancılar, A.H. Kaya, A. Dağçınar, S. Kaplan, C. Marangoz, M. Ayyıldız, B. Kandemir, Y. Temel and R. Vlamings, "Changes in cerebral metabolic activity after bilateral subthalamic nucleotomy in rats with an experimental model of Parkinson's disease", 23rd Scientific Congress of the Turkish Neurosurgical Society, 29–30, Kyrenia, 2009.
E32. Sabancılar, Z., A. Topal, A. Dağçınar, A.H. Kaya, S. Kaplan, C. Marangoz, M. Ayyıldız, B. Kandemir, Y. Temel and R. Vlamings, "Changes in cerebral metabolic activity after bilateral pallidotomy (entopeduncular nucleotomy) in rats with an experimental model of Parkinson's disease", 23rd Scientific Congress of the Turkish Neurosurgical Society, 31, Kyrenia, 2009.
E33. Ulus, A., A.H. Kaya, H. Sataloğlu, A.K. Ulaş, Y. Ulus, K. Göl and Ö. İyigün, "Anterior approach to the upper thoracic vertebrae by partial upper sternotomy: presentation of a case report", 23rd Scientific Congress of the Turkish Neurosurgical Society, 97, Kyrenia, 2009.
E34. Ulus, A., A.H. Kaya, H. Sataloğlu, B. Cesur, T. Yılmaz, A. Sav and Ö. İyigün, "An extremely rare tumour – chordoid glioma of the third ventricle: presentation of a case report", 23rd Scientific Congress of the Turkish Neurosurgical Society, 49, Kyrenia, 2009.
E35. Tayfur V, A. Ulus, A.H. Kaya, A. Dağçınar, "Skull base approach via open rhinoplasty", 31st Turkish National Congress of Plastic, Reconstructive and Aesthetic Surgery, Adana, 2009.
E36. Topal A, A.H. Kaya, Cebeci Hİ, Hamzaoğlu V, Akkurt A, Şahin H., "Placement of the battery in the calvaria during deep brain stimulation", 26th Scientific Congress of the Turkish Neurosurgical Society, 122, Antalya, 2012.
E37. Cebeci Hİ, A.H. Kaya, Topal A, Hamzaoğlu V, Akkurt A, Şahin H., "Transient loss of libido in a patient who underwent deep brain stimulation of the globus pallidus internus for dystonia", 26th Scientific Congress of the Turkish Neurosurgical Society, 122, Antalya, 2012.
E38. Adnana Dağcılar, Ercan Genç, Meltem Ceylan, Ümit Belet, Tevfik Sunter, Yaşar Bayri, Aykan Ulus, Ahmet Hilmi Kaya, "Study of developmental variations of the posterior arterial circulation and their clinical correlations in Chiari type II malformation", 27th Scientific Congress of the Turkish Neurosurgical Society, 2013, Antalya.
E39. Kumsal Bihter Kontaytekin, Mehmet Volkan Harput, Cumhur Kaan Yaltırık, Hatice Hire, Ahmet Hilmi Kaya, Başar Sarıkaya, Uğur Hire, "Surgical positions adapted to intraoperative magnetic resonance imaging and use of fixed head holders", 33rd Scientific Congress of the Turkish Neurosurgical Society, 11–14 April 2019, Antalya.
E40. Ezgi Aytaç, Şüheda Çelebi, Neslihan Uztüre, Cumhur Kaan Yaltırık, Ferdi Menda, Ahmet Hilmi Kaya, Hatice Türe, "Study of the effectiveness of using T-shaped pillows and mica protective glasses in the prone position in preventing pressure sores in spinal surgery", 33rd Scientific Congress of the Turkish Neurosurgical Society, 11–14 April 2019, Antalya.
Awards, certificates of attendance at congresses and courses, and international training certificates
1. 3rd Bakırköy International Days, 6–8 November 1996, İstanbul
2. 14th Scientific Congress of the Turkish Neurosurgical Society, 17–21 May 2000, Antalya
3. Training course of the Turkish Neurosurgical Society, tumours, 13–18 March 2001, Antalya
4. EANS Research Committee course, "Research and publication methodology", 28–31 March 2001, Antalya
5. 18th Scientific Congress of the Turkish Neurosurgical Society, 22–26 May 2004, Antalya
6. Ondokuz Mayıs University, Faculty of Medicine, "13th Problem-Based Learning Course", 24–28 October 2005, Samsun
7. 3rd International Microneurosurgical Anatomy Symposium, 5–8 November 2006, Antalya
8. Education and Training Group for Spinal and Peripheral Nerve Surgery of the Turkish Neurosurgical Society, "Autumn Symposium on Spinal and Peripheral Nerve Injuries", 2–5 November 2006, Antalya
9. 21st Scientific Congress of the Turkish Neurosurgical Society, 20–24 April 2007, Antalya
10. Acıbadem–Harvard Medical Days, "Movement Disorders", 22 October 2007, İstanbul
11. Education and Training Group for Spinal and Peripheral Nerve Surgery of the Turkish Neurosurgical Society, "Tumours of the Spine and Spinal Cord", 18–21 October 2007, Antalya
12. "Live Microscopic Neurovascular Surgery Course", Department of Neurosurgery, Cerrahpaşa Faculty of Medicine, 29–31 October 2007, İstanbul
13. Education and Training Group for Stereotactic and Functional Neurosurgery of the Turkish Neurosurgical Society, "Advances in Functional Neurosurgery", 23 November 2007, Adana
14. Ondokuz Mayıs University, Local Ethics Committee for Animal Experimentation, certificate for the use of laboratory animals, certificate no.: 0087, 06.07.2007, Samsun
15. "Advanced Knowledge of Brain Morphology and Surgery", University of Pisa, Department of Anatomy and Applied Biology, 16–17 November 2007, Pisa
16. Fundamental Neurosurgery and Training Course of the Turkish Neurosurgical Society, "Head Trauma, Pain and Functional Neurosurgery", 11–14 March 2008, İzmir
17. 22nd Scientific Congress of the Turkish Neurosurgical Society, 18–22 April 2008, Antalya
18. 23rd Scientific Congress of the Turkish Neurosurgical Society, 2009, Kyrenia
19. OSCE preparation training, Turkish Pharmacological Society, 6–8 January 2011, Samsun
20. 25th Scientific Congress of the Turkish Neurosurgical Society, 2011, Antalya
21. Joint Symposium of the Neuro-Oncological and Neurovascular Surgery Training Groups of the Turkish Neurosurgical Society, participation, 28–29 December 2013, İstanbul
22. Joint Symposium of the Neuro-Oncological and Neurovascular Surgery Training Groups of the Turkish Neurosurgical Society, contribution, 28–29 December 2013, İstanbul
23. 27th Scientific Congress of the Turkish Neurosurgical Society, 2013, Antalya
24. 5th Microneurosurgery Course in Istanbul, part 2: practical white matter dissection and live 3D surgery, 22–28 June 2014, İstanbul
25. International course on cadaveric DBS surgery and microelectrode recording, contribution, 6–7 February 2015, İstanbul
26. Basic Life Support training, 29 December 2015, İstanbul
27. Symposium of the Neuro-Oncological Surgery Training Group of the Turkish Neurosurgical Society, lesions of the sellar and parasellar region, 16–17 December 2016, İstanbul
28. 8th Microneurosurgery Course in Istanbul, part 1: practical microvascular anastomosis, 7–10 June 2017, İstanbul
29. 8th Microneurosurgery Course in Istanbul, part 2: practical white matter dissection and live surgery, 11–16 June 2017, İstanbul
30. Training on the application of health law, 19 July 2017, İstanbul
31. 33rd Scientific Congress of the Turkish Neurosurgical Society, 2019, Antalya
32. 2nd meeting of the International Society for Spinal Endoscopy (UBE), 5–7 September 2019, Bursa
33. 1st Pituitary Day, Yeditepe University, craniopharyngiomas, 12 October 2019, İstanbul
34. Maastricht University, Department of Cellular Neuroscience, 2007, Netherlands

Citations
• According to Web of Science: 262 citations in total
• According to Google Scholar: 418 citations in total

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