Dr Ari G Chacko is a distinguished Neurosurgeon based at the Apollo Proton Cancer Centre, Chennai, India. With an impressive 35 years of experience in the medical field, he has dedicated his career to providing exceptional healthcare services to patients. He has concentrated on clinical neurosurgery with a focus on microsurgical removal of brain and spinal cord tumors, as well as endoscopic removal of skull base tumors including pituitary adenomas. He is a pioneer in the refinement of awake surgeries for gliomas, microsurgical excision of intramedullary spinal cord tumors, vestibular schwannoma surgery for facial nerve preservation and in the maximal safe resection of craniopharyngiomas. Dr Chacko also has considerable experience in surgery for epilepsy including disconnection procedures such as the hemispherotomy for intractable hemispheric epilepsy.
At the Apollo Proton Cancer Centre (APCC), the majority of patients treated suffer from gliomas requiring multidisciplinary care from Neurosurgery, Radiation Oncology, Neuropathology, Neuroradiology, Neurophysiology and Endocrinology. APCC is one of the best hospitals in India dealing with gliomas since the multidisciplinary team has trained in some of the best institutions in the country and keep up to date with recent advances in the field. Dr Chacko has a natural inclination towards interacting closely with colleagues in these disciplines to provide comprehensive care to patients with brain tumors.
Dr Chacko is known for his patient-centric approach, emphasizing the importance of understanding each patient’s unique needs and medical history ensuring that patients receive tailored care to their individual requirements. In his practice, Dr Chacko educates patients regarding their health conditions empowering individuals to play active roles in decision making.
Professor: 2003-2022 Department of Neurological Sciences, Christian Medical College Vellore, Tamil Nadu
2003
Associate Professor: 1999-2003 Department of Neurological Sciences, Christian Medical College Vellore, Tamil Nadu.
1999
Research Associate: 1997-1999 Department of Neurosurgery, Baylor College of Medicine, Houston, Texas, USA
1997
Lecturer: 1994-1997 Department of Neurological Sciences Christian Medical College Vellore, Tamil Nadu.
1994
Neurosurgery Residency: 1989-94 Christian Medical College, Vellore
1988
Resident Medical Officer: 1986-88 CSI Basel Mission Hospital, Gadag-Betgeri Karnataka, India
1986
Internship: 1985-86 Christian Medical College, Vellore, Tamil Nadu
1985
MBBS: 1980-85 Christian Medical College, Vellore, Tamil Nadu
Research & Publications
01
Rajan RR, Shyamasunder H, Chacko G, SD, Jeyachandran R, Chacko AG, Prabhu K, Rajaratnam S, Kapoor N, Thomas N, Pai R. Dopamine receptor expression predicts cabergoline response in persistent somatotroph adenoma. Pituitary. 2025;28(4):87.
02
Goyal-Honavar A, Abraham AP, Asha HS, Chacko G, Chacko AG. Functional transformation of a corticotroph pituitary neuroendocrine tumor 128 months following primary excision: A case report. Turk Neurosurg. 2025;35(2):355–359.
03
Goyal-Honavar A, Gandham EJ, Chacko AG. Pial laceration from a dural suture causing devastating neurological deficits. Acta Neurochir Suppl. 2025;133:21–25.
04
Vupputuri H, D'Souza WP, Ralte Z, Malleshappa V, Chacko AG, Rupa V, Rajshekhar V. Comparison of sinonasal outcomes in patients undergoing uni-nostril and bi-nostril endoscopic trans-sphenoidal excision of pituitary adenomas: A prospective study. J Neurol Surg B Skull Base. 2023;85(5):489–500.
05
Goyal-Honavar A, Markose AP, Gupta A, Manesh A, Varghese GM, Rose W, Jonathan GE, Prabhu K, Chacko AG. Distinct patterns of postoperative fever in paediatric neurosurgery patients. Childs Nerv Syst. 2024;40(6):1849–1858.
06
Sathya A, Goyal-Honavar A, Chacko AG, Jasper A, Chacko G, Devakumar D, Seelam JA, Sasidharan BK, Pavamani SP, Thomas HMT. Is radiomics a useful addition to magnetic resonance imaging in the preoperative classification of PitNETs? Acta Neurochir (Wien). 2024;166(1):91.
07
Rajan R, Chacko AG, Verma S, Kapoor N, Paul T, Thomas N, Jebasingh F, Cherian KE, Sahu S, Shyamasunder AH. Predictors of delayed hyponatraemia after surgery for pituitary tumour. Horm Metab Res. 2023;55(6):395–401.
08
Gandham EJ, Goyal-Honavar A, Johnson LR, Gupta A, Thomas R, Devasahayam S, Prabhu K, Chacko AG. A negative-pressure face-mounted system reduces aerosol spread during endonasal endoscopic surgery. J Neurol Surg B Skull Base. 2022;84(3):217–224.
09
Cossu G, Jouanneau E, Cavallo LM, Froelich S, Starnoni D, Giammattei L, Harel E, Mazzatenta D, Bruneau M, Meling TR, Berhouma M, Chacko AG, Cornelius JF, Paraskevopoulos D, Schroeder HWS, Zazpe I, Manet R, Gardner PA, Dufour H, Cappabianca P, Daniel RT, Messerer M. Surgical management of giant pituitary neuroendocrine tumors: Meta-analysis and consensus statement on behalf of the EANS Skull Base Section. Brain Spine. 2022;2:100878.
10
Kurian DE, V R, Horo S, Chacko AG, Prabhu K, Mahasampath G, Korah S. Predictive value of retinal nerve fibre layer thickness for postoperative visual improvement in patients with pituitary macroadenoma. BMJ Open Ophthalmol. 2022;7(1):e000964.
11
Sarkar S, Korula S, Mathai S, Simon A, Balakrishnan R, Backianathan S, Chacko AG. Upfront adjuvant irradiation versus postoperative surveillance following incomplete surgical resection of craniopharyngiomas in children and young adults. Childs Nerv Syst. 2022;38(10):1877–1883.
12
Balakumar S, Pai R, Chacko AG, Patel B, Nancy R, Balakrishnan R, Sarkar S, Sampath G, Chacko G. Telomerase reverse transcriptase promoter mutations in a cohort of adult gliomas: Clinicopathological correlates. Neurol India. 2022;70(3):953–959.
13
Goyal-Honavar A, Gupta A, Manesh A, Varghese GM, Edmond Jonathan G, Prabhu K, Chacko AG. A prospective evaluation of postoperative fever in adult neurosurgery patients in the COVID-19 era. J Clin Neurosci. 2022;103:26–33.
14
Gandham EJ, Goyal-Honavar A, Beno D, Pai R, Balakrishan R, Jasper A, Gowri M, Moorthy RK, Chacko AG, Chacko G. Impact of grade on survival in pleomorphic xanthoastrocytoma and low prevalence of BRAF V600E mutation. World Neurosurg. 2022;164:e922–e928.
15
Goyal-Honavar A, Balasundaram A, Thayakaran IP, Babu M, Pai R, Joseph J, Jayachandran R, Chacko AG, Mathew LG, Balakrishnan R, Rajshekhar V, Jeyaseelan L, Sudarsanam TD, Chacko G. ZFTA fusion in supratentorial ependymomas: Low prevalence in South Asians and no correlation with survival. World Neurosurg. 2022;164:e82–e90.
16
Sarkar S, Chacko SR, Korula S, Hesarghatta A, Balakrishnan R, Mathai S, Simon A, Chacko G, Prabhu K, Chacko AG. A comparison of long-term treatment outcomes between giant and nongiant craniopharyngiomas. World Neurosurg. 2022;162:e587–e596.
17
Goyal-Honavar A, Balakrishnan R, Chacko G, Chacko AG. Radiation-induced intravascular papillary endothelial hyperplasia in a cavernous sinus hemangioma. Neurol India. 2022;70(1):359–362.
18
Gupta A, Chacko G, Chacko AG. Prevalence and pattern of leptomeningeal pigmentation in the human brain and its role in the safe surgical excision of extra-axial brain tumors. Neurol India. 2021;69(5):1204–1209.
19
Abraham AP, Pai R, Beno DL, Chacko G, Asha HS, Rajaratnam S, Kapoor N, Thomas N, Chacko AG. USP8, USP48, and BRAF mutations differ in their genotype–phenotype correlation in Asian Indian patients with Cushing's disease. Endocrine. 2022;75(2):549–559.
20
Ajith A, Mondal S, Chattopadhyay S, Kumar A, Sthanikam Y, Chacko AG, Prabhu K, Chacko G, Vanjare HA, Rajesh RV, Banerjee S. Mass spectrometry imaging deciphers dysregulated lipid metabolism in the human hippocampus affected by temporal lobe epilepsy. ACS Chem Neurosci. 2021;12(21):4187–4194.
21
Goyal-Honavar A, Sarkar S, Chacko G, Balakrishnan R, Asha HS, Chacko AG. Growth hormone storm following infarction of a residual growth hormone-secreting pituitary macroadenoma. Br J Neurosurg. 2024;38(4):983–986.
22
Starnoni D, Tuleasca C, Giammattei L, Cossu G, Bruneau M, Berhouma M, Cornelius JF, Cavallo L, Froelich S, Jouanneau E, Meling TR, Paraskevopoulos D, Schroeder H, Tatagiba M, Zazpe I, Sufianov A, Sughrue ME, Chacko AG, Benes V, González-Lopez P, Roche PH, Levivier M, Messerer M, Daniel RT. Surgical management of anterior clinoidal meningiomas: Consensus statement on behalf of the EANS Skull Base Section. Acta Neurochir (Wien). 2021;163(12):3387–3400.
23
Goyal-Honavar A, Sarkar S, Asha HS, Kapoor N, Balakrishnan R, Vanjare H, Chacko G, Chacko AG. A clinicoradiological analysis of silent corticotroph adenomas after the introduction of pituitary-specific transcription factors. Acta Neurochir (Wien). 2021;163(11):3143–3154.
24
Salunke P, Sahoo SK, Chacko AG, Baishya BK, Tripathi M, Chabbra R, Karthigeyan M, Aggarwal A, Singh A, Gupta SK. Feasibility of conducting a virtual exit exam in neurosurgery during the SARS-CoV-2 pandemic. Neurol India. 2021;69(3):698–702.
25
Goyal-Honavar A, Gupta A, Chacko G, Chacko AG. Trigeminal hybrid nerve sheath tumor: A case report and literature review. Br J Neurosurg. 2023;37(5):1326–1329.
26
Gupta A, Goyal-Honavar A, Jonathan GE, Prabhu K, Varghese GM, Rupali P, Chacko AG. Adapting management strategies for sellar-suprasellar lesions during the COVID-19 pandemic: A pragmatic approach from the frontline. Br J Neurosurg. 2024;38(3):596–603.
27
Goyal-Honavar A, Sarkar S, Asha HS, Kapoor N, Thomas R, Balakrishnan R, Chacko G, Chacko AG. Impact of experience on outcomes after endoscopic transsphenoidal surgery for acromegaly. World Neurosurg. 2021;151:e1007–e1015.
28
Shyamasunder AH, Pai R, Ramamoorthy H, Sakhti D, Manipadam MT, Kapoor N, Paul TV, Jebasingh F, Thomas N, Abraham DT, Paul MJ, Chacko AG, Prabhu K, Rajaratnam S. Clinical profile and mutations associated with multiple endocrine neoplasia type 1 (MEN1) and their first-degree relatives at risk of developing MEN1: A prospective study. Horm Metab Res. 2021;53(4):245–256.
29
Goyal-Honavar A, Chacko G, Chacko AG. Supratentorial primary paraganglioma with good long-term outcome following radical excision. Br J Neurosurg. 2023;37(6):1766–1769.
30
Pramila PJ, Mannam P, Chacko AG, Benjamin RN. Progressive midbrain clefts after head trauma and decompressive surgery: A report of two patients. BMJ Case Rep. 2021;14(2):e238893.
31
Sarkar S, Chacko SR, Korula S, Simon A, Mathai S, Chacko G, Chacko AG. Long-term outcomes following maximal safe resection in a contemporary series of childhood craniopharyngiomas. Acta Neurochir (Wien). 2021;163(2):499–509.
32
Benjamin RN, Thomas M, Muthusamy K, Yoganathan S, Mathew V, Chacko AG, Prabhu K, Chacko G. Age-dependent reduction in severity and discrete topographical patterns in Rasmussen encephalitis: A link to cortical maturation? Pediatr Neurol. 2020;112:25–33.
33
Chacko SR, Abraham AP, Asha HS, Kapoor N, Rajaratnam S, Chacko AG. Selective perioperative steroid supplementation protocol in patients undergoing endoscopic transsphenoidal surgery for pituitary adenomas. Acta Neurochir (Wien). 2020;162(10):2381–2388.
34
Starnoni D, Giammattei L, Cossu G, Link MJ, Roche PH, Chacko AG, Ohata K, Samii M, Suri A, Bruneau M, Cornelius JF, Cavallo L, Meling TR, Froelich S, Tatagiba M, Sufianov A, Paraskevopoulos D, Zazpe I, Berhouma M, Jouanneau E, Verheul JB, Tuleasca C, George M, Levivier M, Messerer M, Daniel RT. Surgical management for large vestibular schwannomas: A systematic review, meta-analysis, and consensus statement on behalf of the EANS Skull Base Section. Acta Neurochir (Wien). 2020;162(11):2595–2617.
35
Abraham AP, Bindra MS, Chacko AG. Secondary bacterial infection of a solitary cysticercus granuloma. Neurol India. 2020;68(3):684–687.
36
Sarkar S, Chacko AG. Surgery for acromegaly. Neurol India. 2020;68(Suppl):S44–S51.
37
Sathyakumar K, Mani S, Pathak GH, Prabhu K, Chacko AG, Chacko G. Neuroimaging of pediatric infratentorial tumors and the value of diffusion-weighted imaging in determining tumor grade. Acta Radiol. 2021;62(4):533–540.
38
Cossu G, Jouanneau E, Cavallo LM, Elbabaa SK, Giammattei L, Starnoni D, Barges-Coll J, Cappabianca P, Benes V, Baskaya MK, Bruneau M, Meling T, Schaller K, Chacko AG, Youssef AS, Mazzatenta D, Ammirati M, Dufour H, Laws E, Berhouma M, Daniel RT, Messerer M. Surgical management of craniopharyngiomas in adult patients: A systematic review and consensus statement on behalf of the EANS Skull Base Section. Acta Neurochir (Wien). 2020;162(5):1159–1177.
39
Vupputuri H, Gandham EJ, Mani SA, Raju KP, Aaron S, Chacko AG. Dynamic imaging of the craniovertebral junction is mandatory in patients with posterior circulation strokes. Eur Spine J. 2020;29(5):1078–1086.
40
Valmiki RR, Venkatesalu S, Chacko AG, Prabhu K, Thomas MM, Mathew V, Yoganathan S, Muthusamy K, Chacko G, Vanjare HA, Krothapalli SB. Phosphoproteomic analysis reveals Akt isoform-specific regulation of cytoskeleton proteins in human temporal lobe epilepsy with hippocampal sclerosis. Neurochem Int. 2020;134:104654.
41
Abraham AP, Sarkar S, Mannam P, Chacko G, Chacko AG. A rare case of a giant tentorial bicompartmental cystic schwannoma unrelated to the cranial nerves. Neurol India. 2019;67(3):932–933.
42
Chacko SR, Chacko AG. Antiprogesterone therapy in recurrent meningiomas: A disappointing end to four decades of research? Neurol India. 2019;67(3):706–707.
43
Konay AS, Williams A, Chacko AG, Singh G. A prospective randomized trial comparing topical intranasal lidocaine and levobupivacaine in patients undergoing endoscopic binostril transnasal transsphenoidal resection of pituitary tumors. J Neurosurg Anesthesiol. 2021;33(1):51–57.
44
Abraham AP, Thomas MM, Mathew V, Muthusamy K, Yoganathan S, Jonathan GE, Prabhu K, Daniel RT, Chacko AG. EEG lateralization and seizure outcome following peri-insular hemispherotomy for pediatric hemispheric epilepsy. Childs Nerv Syst. 2019;35(7):1189–1195.
45
Geevar T, Pai R, Chacko G, Malepathi K, Patel B, John J, Chacko AG, Balakrishnan R, John S. Molecular profile of tumors with oligodendroglial morphology: Clinical relevance. Neurol India. 2018;66(6):1726–1731.
46
Tobin G, Chacko AG, Simon R. Evaluation of NT-ProBNP as a marker of the volume status of neurosurgical patients developing hyponatremia and natriuresis: A pilot study. Neurol India. 2018;66(5):1383–1388.
47
Turel MK, Chacko AG. Endoscopic partial cervical corpectomy: Opening a new door to create a wider window. Neurol India. 2018;66(2):452–453.
48
Abraham AP, Gandham EJ, Prabhu K, Chacko AG. Authors' reply: In defence of subgaleoatrial shunt! Neurol India. 2018;66(1):286–287.
49
Jonathan GE, Sarkar S, Singh G, Mani S, Thomas R, Chacko AG. A randomized controlled trial to determine the role of intraoperative lumbar cerebrospinal fluid drainage in patients undergoing endoscopic transsphenoidal surgery for pituitary adenomas. Neurol India. 2018;66(1):133–138.
50
Subramanian D, Pralong E, Daniel RT, Chacko AG, Stoop R, Babu KS. Gamma oscillatory activity in vitro: A model system to assess pathophysiological mechanisms of comorbidity between autism and epilepsy. Transl Psychiatry. 2018;8(1):16.
51
Abraham AP, Gandham EJ, Prabhu K, Chacko AG.
Subgaleoatrial shunt: Further progress in the management of iatrogenic cranial pseudomeningoceles.
Neurol India. 2017 Sep-Oct;65(5):1178-1180.
52
Paul AP, Vedantam A, Korula G, Chacko AG. A comparison of the recovery profiles of desflurane and isoflurane anesthesia in patients undergoing elective supratentorial craniotomy: A randomized controlled trial. Neurol India. 2017;65(5):1053–1058.
53
Sarkar S, Philip VJ, Cherukuri SK, Chacko AG, Chacko G. Implications of the World Health Organization definition of atypia on surgically treated functional and non-functional pituitary adenomas. Acta Neurochir (Wien). 2017;159(11):2179–2186.
54
Gandham EJ, Sundaresan R, Thomas R, Chacko AG. A novel nasoseptal flap harvesting technique in revision expanded endoscopic transsphenoidal approaches. Neurol India. 2017;65(1):129–133.
55
Thomas R, Girishan S, Chacko AG. Endoscopic transmaxillary transposition of temporalis flap for recurrent cerebrospinal fluid leak closure. J Neurol Surg B Skull Base. 2016;77(6):445–448.
56
Gupta N, Chacko G, Chacko AG, Rajshekhar V, Jayprakash M. Fluorescence in situ hybridization for chromosome 14q deletion in subsets of meningioma segregated by MIB-1 labelling index. Neurol India. 2016;64(6):1256–1263.
57
Thomas R, Chacko AG. Principles in skull base reconstruction following expanded endoscopic approaches. J Neurol Surg B Skull Base. 2016;77(4):358–363.
58
Velayutham P, Rajshekhar V, Chacko AG, Krothapalli Babu S. Influence of tumor location and other variables on predictive value of intraoperative myogenic motor-evoked potentials in spinal cord tumor surgery. World Neurosurg. 2016;92:264–272.
59
Turel MK, D'Souza WP, Chacko AG, Rajshekhar V. Giant vestibular schwannomas: Surgical nuances influencing outcome in 179 patients. Neurol India. 2016;64(3):478–484.
60
Sivaraju L, Mani S, Prabhu K, Daniel RT, Chacko AG. Three-dimensional computed tomography angiographic study of the vertebral artery in patients with congenital craniovertebral junction anomalies. Eur Spine J. 2017;26(4):1028–1038.
61
Abraham AP, Srinivas SB, Murthy M, Babu KS, Chacko AG. Surface electromyography activity in the upper limbs of patients following surgery for compressive cervical myelopathy. Neurol India. 2015;63(6):903–910.
62
Sarkar S, Rajaratnam S, Chacko G, Mani S, Hesargatta AS, Chacko AG. Pure endoscopic transsphenoidal surgery for functional pituitary adenomas: Outcomes with Cushing's disease. Acta Neurochir (Wien). 2016;158(1):77–86.
63
Pratheesh R, Swallow DM, Joseph M, Natesan D, Rajaratnam S, Jacob KS, Chacko AG. Evaluation of a protocol-based treatment strategy for postoperative diabetes insipidus in craniopharyngioma. Neurol India. 2015;63(5):712–717.
64
George R, Jeba J, Ramkumar G, Chacko AG, Tharyan P. Interventions for the treatment of metastatic extradural spinal cord compression in adults. Cochrane Database Syst Rev. 2015;(9):CD006716.
65
Sarkar S, Chacko AG, Chacko G. Clinicopathological correlates of extrasellar growth patterns in pituitary adenomas. J Clin Neurosci. 2015;22(7):1173–1177.
66
Turel MK, Chacko AG. Postoperative arachnoid cyst causing visual deterioration following transsphenoidal excision of a pituitary adenoma. Neurol India. 2015;63(2):274–276.
67
Patel B, Chacko G, Nair S, Anandan J, Chacko AG, Rajshekhar V, Turel M. Clinicopathological correlates of primary central nervous system lymphoma: Experience from a tertiary care center in South India. Neurol India. 2015;63(1):77–82.
68
Thomas HMT, Devadhas D, Heck DK, Chacko AG, Rebekah G, Oommen R, Samuel EJ. Adaptive threshold segmentation of pituitary adenomas from FDG PET images for radiosurgery. J Appl Clin Med Phys. 2014;15(6):4952.
69
Sarkar S, Rajaratnam S, Chacko G, Chacko AG. Endocrinological outcomes following endoscopic and microscopic transsphenoidal surgery in 113 patients with acromegaly. Clin Neurol Neurosurg. 2014;126:190–195.
70
Sarkar S, Chacko G, Chacko AG. An analysis of granulation patterns, MIB-1 proliferation indices and p53 expression in 101 patients with acromegaly. Acta Neurochir (Wien). 2014;156(12):2221–2230.
71
Nayak R, Shetty S, Kapoor N, Chacko AG, Paul TV. Visual vignette. Endocr Pract. 2014;20(11):1237.
72
Sarkar S, Turel MK, Jacob KS, Chacko AG. The evolution of T2-weighted intramedullary signal changes following ventral decompressive surgery for cervical spondylotic myelopathy. J Neurosurg Spine. 2014;21(4):538–546.
73
Turel MK, Babu KS, Singh G, Chacko AG. The utility of facial nerve amplitude and latency ratios in predicting postoperative facial nerve function after vestibular schwannoma surgery. Neurol India. 2014;62(2):178–182.
74
Sarkar S, Jacob KS, Pratheesh R, Chacko AG. Transsphenoidal surgery for acromegaly: Predicting remission with early postoperative growth hormone assays. Acta Neurochir (Wien). 2014;156(7):1379–1387.
75
Nair BR, Prabhu K, Chacko G, Chacko AG. Calcified cavernous malformation of the lower cranial nerves. Neurol India. 2014;62(1):104–105.
76
Chacko AG, Natarajan MS, Prabhu K, Chacko G. Schwannoma of the supraorbital nerve presenting as a subfrontal tumor. Neurol India. 2014;62(1):96–98.
77
Singh VY, Chacko G, Chacko AG, Rajshekhar V. Fluorescence in situ hybridization for 1p, 19q status in a cohort of glial neoplasms. Neurol India. 2014;62(1):32–36.
Ahmed M, Keshava SN, Mammen S, Chacko AG, Prabhu K. An unusual case of reversible cerebral vasoconstriction syndrome presenting with a large intraparenchymal haematoma. Neurol India. 2013;61(5):535–537.
80
Messerer M, Dubourg J, Raverot G, Bervini D, Berhouma M, George I, Chacko AG, Perrin G, Levivier M, Daniel RT, Trouillas J, Jouanneau E. Non-functioning pituitary macro-incidentalomas benefit from early surgery before becoming symptomatic. Clin Neurol Neurosurg. 2013;115(12):2514–2520.
Chacko AG, Joseph M, Turel MK, Prabhu K, Daniel RT, Jacob KS. Answer to the letter to the editor concerning multilevel oblique corpectomy for cervical spondylotic myelopathy preserves segmental motion. Eur Spine J. 2013;22(9):2122.
83
Chacko AG, Turel MK, Sarkar S, Prabhu K, Daniel RT. Clinical and radiological outcomes in 153 patients undergoing oblique corpectomy for cervical spondylotic myelopathy. Br J Neurosurg. 2014;28(1):49–55.
84
Asirvatham JR, Pai R, Chacko G, Nehru AG, John J, Chacko AG, Muliyil J. Molecular characteristics of meningiomas in a cohort of Indian patients: Loss of heterozygosity analysis of chromosomes 22, 17, 14 and 10. Neurol India. 2013;61(2):138–143.
85
Aaron S, Alexander M, Moorthy RK, Mani S, Mathew V, Patil AK, Sivadasan A, Nair S, Joseph M, Thomas M, Prabhu K, Joseph BV, Rajshekhar V, Chacko AG. Decompressive craniectomy in cerebral venous thrombosis: A single-centre experience. J Neurol Neurosurg Psychiatry. 2013;84(9):995–1000.
86
Turel MK, Sarkar S, Prabhu K, Daniel RT, Jacob KS, Chacko AG. Reduction in range of cervical motion on serial long-term follow-up in patients undergoing oblique corpectomy for cervical spondylotic myelopathy. Eur Spine J. 2013;22(7):1509–1516.
87
Pratheesh R, Swallow DM, Rajaratnam S, Jacob KS, Chacko G, Joseph M, Chacko AG. Incidence, predictors and early postoperative course of diabetes insipidus in paediatric craniopharyngioma: A comparison with adults. Childs Nerv Syst. 2013;29(6):941–949.
88
Chacko AG, Thomas SG, Babu KS, Daniel RT, Chacko G, Prabhu K, Cherian V, Korula G. Awake craniotomy and electrophysiological mapping for eloquent area tumours. Clin Neurol Neurosurg. 2013;115(3):329–334.
89
Nehru GA, Pai R, Samuel P, Chacko AG, Chacko G. Status of O6-methylguanine-DNA methyltransferase (MGMT) gene promoter methylation among patients with glioblastomas from India. Neurol India. 2012;60(5):481–486.
90
Pratheesh R, Rajaratnam S, Prabhu K, Mani SE, Chacko G, Chacko AG. The current role of transcranial surgery in the management of pituitary adenomas. Pituitary. 2013;16(4):419–434.
91
Thomas SG, Daniel RT, Chacko AG, Thomas M, Russell PS. Outcomes of disconnective surgery in intractable pediatric hemispheric and subhemispheric epilepsy. Int J Pediatr. 2012;2012:527891.
92
Mammen S, Keshava SN, Danda S, Raju R, Chacko AG. Endovascular management of carotid-cavernous fistula in Ehlers-Danlos syndrome type IV. Neurol India. 2012;60(1):119–121.
93
Chacko AG, Joseph M, Turel MK, Prabhu K, Daniel RT, Jacob KS. Multilevel oblique corpectomy for cervical spondylotic myelopathy preserves segmental motion. Eur Spine J. 2012;21(7):1360–1367.
94
Turel MK, Asha HS, Rajaratnam S, Chacko G, Chacko AG. Thyroid-stimulating hormone microadenoma as a rare cause of thyrotoxicosis amenable to surgical cure. J Clin Neurosci. 2012;19(6):887–888.
95
Korula PJ, Thomas SG, Sen N, Chacko AG. Transient cortical blindness following a Hangman's fracture: A case report and review of literature. Br J Neurosurg. 2012;26(2):272–274.
96
Moorthy RK, Sam GA, Kumar SV, Chacko G, Mathews V, Chacko AG, Srivastava A, Rajshekhar V. Intralesional mesenchymal stromal cell transplant in a rodent model of cortical cryoinjury. Neurol India. 2011;59(4):573–578.
97
Natarajan MS, Prabhu K, Chacko G, Rajaratnam S, Chacko AG. Endoscopic transsphenoidal excision of a GH-PRL-secreting pituitary macroadenoma in a patient with McCune-Albright syndrome. Br J Neurosurg. 2012;26(1):104–106.
98
Turel MK, Chacko AG. Delayed resolution of extensive T2-weighted intramedullary signal changes after oblique corpectomy for cervical spondylotic myelopathy. Br J Neurosurg. 2011;25(6):772–774.
99
Asirvatham JR, Deepti AN, Chyne R, Prasad MS, Chacko AG, Rajshekhar V, Chacko G. Pediatric tumors of the central nervous system: A retrospective study of 1,043 cases from a tertiary care center in South India. Childs Nerv Syst. 2011;27(8):1257–1263.
100
Natarajan MS, Prabhu K, Braganza A, Chacko AG. Posttraumatic subgaleal and orbital hematoma due to factor XIII deficiency. J Neurosurg Pediatr. 2011;7(2):213–217.
101
Prabhu K, Ramamani, Nair S, Chacko AG. Acute submandibular sialadenitis as a cause of unilateral neck swelling after posterior fossa surgery in sitting position. Neurol India. 2010;58(6):963–964.
102
Prabhu K, Kurien M, Chacko AG. Endoscopic transsphenoidal approach to petrous apex cholesterol granulomas. Br J Neurosurg. 2010;24(6):688–691.
Moses V, Daniel RT, Chacko AG. The value of intraoperative ultrasound in oblique corpectomy for cervical spondylotic myelopathy and ossified posterior longitudinal ligament. Br J Neurosurg. 2010;24(5):518–525.
105
Chacko G, Chacko AG, Kovacs K, Scheithauer BW, Mani S, Muliyil JP, Seshadri MS. The clinical significance of MIB-1 labeling index in pituitary adenomas. Pituitary. 2010;13(4):337–344.
106
Thomas SG, Daniel RT, Chacko AG, Thomas M, Russell PS. Cognitive changes following surgery in intractable hemispheric and subhemispheric pediatric epilepsy. Childs Nerv Syst. 2010;26(8):1067–1073.
107
Prabhu K, Daniel RT, Chacko G, Chacko AG. Optic nerve haemangioblastoma mimicking a planum sphenoidale meningioma. Br J Neurosurg. 2009;23(5):561–563.
108
Prabhu K, Daniel RT, Mani S, Chacko AG. Dermoid tumor with diastematobulbia. Surg Neurol. 2009;72(6):717–721.
109
Sujit Kumar GS, Chacko G, Chacko AG, Haran RP. Multiple extracranial metastases from intradiploic meningioma. Neurol India. 2009;57(1):96–97.
George R, Jeba J, Ramkumar G, Chacko AG, Leng M, Tharyan P. Interventions for the treatment of metastatic extradural spinal cord compression in adults. Cochrane Database Syst Rev. 2008;(4):CD006716.
112
Bahuleyan B, Daniel RT, Chacko G, Chacko AG. Epidermoid cysts of the velum interpositum. J Clin Neurosci. 2008;15(10):1159–1161.
113
Kumar GS, Raj PM, Chacko G, Lalitha MK, Chacko AG, Rajshekhar V. Cranial melioidosis presenting as a mass lesion or osteomyelitis. J Neurosurg. 2008;108(2):243–247.
114
Bhaskar IP, Chacko AG, Daniel RT. Brainstem compression from a trigeminal schwannoma presenting with pathological crying. J Clin Neurosci. 2008;15(3):322–324.
115
Chacko AG, Daniel RT. Multilevel cervical oblique corpectomy in the treatment of ossified posterior longitudinal ligament in the presence of ossified anterior longitudinal ligament. Spine (Phila Pa 1976). 2007;32(20):E575–E580.
116
Bahuleyan B, Rao A, Chacko AG, Daniel RT. Supracerebellar arachnoid cyst: A rare cause of acquired Chiari I malformation. J Clin Neurosci. 2007;14(9):895–898.
117
Venkatesan T, Thomas N, Ponniah M, Khan D, Chacko AG, Rajshekhar V. Oral triiodothyronine in the perioperative management of central hypothyroidism. Singapore Med J. 2007;48(6):555–558.
118
Chacko AG, Daniel RT, Chacko G, Babu KS. Pial and arachnoid welding for restoration of normal cord anatomy after excision of intramedullary spinal cord tumors. J Clin Neurosci. 2007;14(8):764–769.
119
Chacko G, Chacko AG, Dunham CP, Judkins AR, Biegel JA, Perry A. Atypical teratoid/rhabdoid tumor arising in the setting of a pleomorphic xanthoastrocytoma. J Neurooncol. 2007;84(2):217–222.
120
Bahuleyan B, Raghuram L, Rajshekhar V, Chacko AG. To assess the ability of MRI to predict consistency of pituitary macroadenomas. Br J Neurosurg. 2006;20(5):324–326.
121
Surendrababu NR, Chacko G, Daniel RT, Chacko AG. Solitary fibrous tumor of the lateral ventricle: CT appearances and pathologic correlation with follow-up. AJNR Am J Neuroradiol. 2006;27(10):2135–2136.
122
Kumar GS, Poonnoose SI, Chacko AG, Rajshekhar V. Trigonal cavernous angiomas: Report of three cases and review of literature. Surg Neurol. 2006;65(4):367–371.
Singh AD, Chacko AG, Chacko G, Rajshekhar V. Plasma cell tumors of the skull. Surg Neurol. 2005;64(5):434–438.
125
Shah KC, Chacko G, John S, Chacko AG. Spinal intramedullary metastasis from intracranial germinoma. Neurol India. 2005;53(3):374–375.
126
Joseph V, Chacko AG. Suprabrow minicraniotomy for suprasellar tumours. Br J Neurosurg. 2005;19(1):33–37.
127
Prabhu K, Babu KS, Samuel S, Chacko AG. Rapid opening and closing of the hand as a measure of early neurologic recovery in the upper extremity after surgery for cervical spondylotic myelopathy. Arch Phys Med Rehabil. 2005;86(1):105–108.
128
Kumar GS, Chacko AG, Rajshekhar V. Unusual presentation of the syndrome of the trephined. Neurol India. 2004;52(4):504–505.
129
Chacko AG, Moorthy RK, Chandy MJ. The transpedicular approach in the management of thoracic spine tuberculosis: A short-term follow-up study. Spine (Phila Pa 1976). 2004;29(17):E363–E367.
130
Shah KC, Chacko AG. Extensive vertebral haemangioma with cord compression in two patients: Review of the literature. Br J Neurosurg. 2004;18(3):250–252.
131
Sujit Kumar GS, Chacko G, Chacko AG, Rajshekhar V. Alveolar soft-part sarcoma presenting with multiple intracranial metastases. Neurol India. 2004;52(2):257–258.
132
Kumar GS, Chacko AG, Chacko M. Superior sagittal sinus and torcula thrombosis in minor head injury. Neurol India. 2004;52(1):123–124.
133
Shankar A, Chacko G, Chacko AG. Intratumoral abscess: An unusual complication of ventriculoperitoneal shunt infection. Childs Nerv Syst. 2004;20(3):204–206.
134
Chacko AG, Chacko G, Seshadri MS, Chandy MJ. The capsule of pituitary macroadenomas represents normal pituitary gland: A histopathological study. Br J Neurosurg. 2003;17(3):213–218.
135
Chacko AG, Kumar NK, Chacko G, Athyal R, Rajshekhar V. Intraoperative ultrasound in determining the extent of resection of parenchymal brain tumours: A comparative study with computed tomography and histopathology. Acta Neurochir (Wien). 2003;145(9):743–748.
136
Abraham RG, Kumar NK, Chacko AG. A minimally invasive approach to deep-seated brain lesions using balloon dilatation and ultrasound guidance. Minim Invasive Neurosurg. 2003;46(3):138–141.
137
Joseph VB, Raghuram L, Korah IP, Chacko AG. MR ventriculography for the study of CSF flow. AJNR Am J Neuroradiol. 2003;24(3):373–381.
138
Chacko AG, Chacko G, Seshadri MS, Chandy MJ. Hemorrhagic necrosis of pituitary adenomas. Neurol India. 2002;50(4):490–493.
139
Chacko AG, Chandy MJ. Transsphenoidal line of vision on MRI for pituitary tumor surgery. Neurol India. 2002;50(2):136–140.
140
Samson SK, Kulkarni V, Chacko AG. An unusual presentation of calvarial tuberculosis. Postgrad Med J. 2002;78(917):184, 188–189.
141
Sharma P, Sharma A, Chacko AG. Syringomyelia in spontaneous intracranial hypotension: Case report. J Neurosurg. 2001;95(5):905–908.
142
Chacko AG, Chandy MJ. Favorable outcome after radical excision of a holocord astrocytoma. Clin Neurol Neurosurg. 2000;102(4):240–242.
143
Valadka AB, Gopinath SP, Mizutani Y, Chacko AG, Robertson CS. Similarities between civilian gunshot wounds to the head and nongunshot head injuries. J Trauma. 2000;48(2):296–302.
144
Thomas N, Simon R, Chacko G, Chacko AG, Chandy MJ, Seshadri MS. Regression of acromegaly following pituitary apoplexy. Neurol India. 1999;47(2):161–162.
145
Chacko AG, Chandy MJ. Complications of transsphenoidal pituitary surgery. Neurol India. 1997;45(4):224–230.
146
Chacko AG, Chandy MJ. Diagnostic and staged stereotactic aspiration of multiple bihemispheric pyogenic brain abscesses. Surg Neurol. 1997;48(3):278–282.
147
Chacko AG, Babu KS, Chandy MJ. Value of visual evoked potential monitoring during transsphenoidal pituitary surgery. Br J Neurosurg. 1996;10(3):275–278.
148
Chacko AG, Rajshekhar V, Chacko G. Testicular embryonal cell carcinoma metastasizing to the site of a previously excised cerebellar haemangioblastoma. Br J Neurosurg. 1996;10(2):197–200.
149
Chacko AG, Chacko G, Chandy MJ. Removal of sphenoidal aspergilloma en route to sellar macroprolactinoma. Neurol India. 1995;43(3):171–172.
Q: 1. Who is Dr. Ari G. Chacko and why choose him for neurosurgery in Chennai?
Dr. Ari G. Chacko is a Senior Consultant Neurosurgeon and Director of Neurosciences at Apollo Proton Cancer Centre, Chennai, with over 40 years of experience. He is renowned for his expertise in brain and spinal tumor surgery, skull base surgery, epilepsy surgery, and advanced microsurgical techniques, offering comprehensive and patient-centric neurological care.
Q: 2. What is Dr. Ari G. Chacko’s area of specialization?
Dr. Chacko specializes in neurosurgery with a focus on brain tumors, spinal cord tumors, skull base tumors, pituitary adenomas, gliomas, vestibular schwannomas, craniopharyngiomas, and epilepsy surgery.
Q: 3. What makes Dr. Ari G. Chacko different from other neurosurgeons?
Dr. Chacko is a pioneer in awake brain surgery for gliomas, microsurgical removal of spinal cord tumors, facial nerve preservation during vestibular schwannoma surgery, and advanced skull base procedures. His multidisciplinary approach ensures personalized treatment for every patient.
Q: 4. Where does Dr. Ari G. Chacko practice, and is he accessible for patients across India?
Dr. Ari G. Chacko practices at Apollo Proton Cancer Centre, Chennai. Patients from across India and international locations consult him for advanced neurosurgical care and complex brain and spine conditions.
Q: 5. What neurosurgical procedures does Dr. Ari G. Chacko perform?
He performs microsurgical brain tumor removal, spinal cord tumor surgery, endoscopic skull base surgery, pituitary tumor surgery, awake craniotomy, epilepsy surgery, hemispherotomy, and surgery for vestibular schwannomas and craniopharyngiomas.
Q: 6. Does Dr. Ari G. Chacko treat complex brain tumors like gliomas?
Yes. Dr. Chacko has extensive experience in the multidisciplinary management of gliomas and focuses on maximal safe tumor resection while preserving neurological function and quality of life.
Q: 7. When should I consult Dr. Ari G. Chacko?
You should consult Dr. Chacko if you experience persistent headaches, seizures, weakness, numbness, balance problems, vision changes, speech difficulties, or if you have been diagnosed with a brain, spine, or skull base tumor requiring specialist evaluation.
Q: 8. Does Dr. Ari G. Chacko work with a multidisciplinary neuro-oncology team?
Yes. He collaborates closely with specialists in Radiation Oncology, Neuropathology, Neuroradiology, Neurophysiology, and Endocrinology to provide comprehensive and personalized care for patients with brain tumors and other neurological conditions.
Q: 9. What are Dr. Ari G. Chacko’s qualifications and experience?
Dr. Chacko holds an MBBS and MCh (Neurosurgery) and has more than 40 years of experience. He has served as Professor of Neurological Sciences at Christian Medical College, Vellore, and has international research experience at Baylor College of Medicine, USA.
Q: 10. How can I book an appointment with Dr. Ari G. Chacko at Apollo Proton Cancer Centre?
Appointments can be booked through the Apollo Hospitals official website via Dr. Ari G. Chacko’s profile page or by contacting the Apollo Proton Cancer Centre, Chennai appointment team.
Best Hospital Near me Chennai