Dr. (Brig) S. Viswanath

Visiting Consultant

36 Years of Experience

Medical Oncologist

MBBS, MD, DM

Reg. No.:153389, Tamil Nadu Medical Council

Rela Hospital, Chennai

English, Hindi, Tamil

Consultation Fee ₹ 800

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About Dr. (Brig) S. Viswanath

Dr. (Brig) S. Viswanath is a well-known Medical Oncologist with over 36 years of experience.
Dr. Viswanath brings extensive expertise to the field of medical oncology, specializing in gastrointestinal cancers, colorectal cancer, liquid tumors, and head and neck cancers.
His clinical practice revolves around providing advanced treatments such as chemotherapy, immunotherapy, and targeted therapy aimed at delivering optimal outcomes for his patients.
Dr. Viswanath's educational qualifications include an MBBS from Karnataka Medical College, Hubli, obtained in 1988, followed by an MD in General Medicine from Command Hospital, Airforce, Bangalore in 2000.
He earned a DM in Medical Oncology from the Cancer Institute (WIA), Chennai, in 2006.
He has enriched his career with international experience at renowned hospitals, contributing significantly to the global oncology community.
Dr. Viswanath has received several prestigious awards and medals, including the Shigikara Award from AFLA (Asian Federation of Laryngectomees Association) in 2014.
His academic contributions are notable, with publications in peer-reviewed journals like the Indian Journal of Rheumatology and the Journal of Cancer Metasta Treat.
He is a reputable member of several organizations, including the Royal College of Surgeons Edinburgh, the Indian Surgical Oncology Society, and the City Surgical Oncologist Group.

Education

MBBS, Karnataka Medical College, Hubli, 1988
MD in General Medicine, Command Hospital Air Force, Bangalore, 2000
DM in Medical Oncology, Cancer Institute (WIA), Chennai, 2006

Past Experience

Commandant, Military Hospital, Chennai, 2021
Consultant, Medicine & Medical Oncology, Command Hospital (CC), Lucknow, 2020
Professor, Senior Advisor, Medicine & Medical Oncology, Command Hospital (CC), Lucknow, 2020
Professor, Senior Advisor, Medicine & Medical Oncology, Army Hospital (R&R), 2018
Associate Professor, Senior Advisor, Medicine & Medical Oncology, Army Hospital (R&R), 2016
Associate Professor, Senior Advisor, Medicine & Medical Oncology, Command Hospital (EC), 2012
Assistant Professor, Classified Specialist in Medicine and Medical Oncology, Command Hospital (EC), 2011
Assistant Professor, Classified Specialist in Medicine and Medical Oncology, Command Hospital (WC), 2009

Awards

Shigikara Award, Asian Federation of Laryngectomees Association (AFLA), 2014

Associations/Membership

Royal College of Surgeons Edinburgh
Association of Surgeons of India
Indian Surgical Oncology Society
City Surgical Oncologist Group

Paper Published

Singal V K, Viswanath S, Chengappa ANM. Two cases of refractory rheumatoid arthritis treated with Rituximab; Indian Journal of Rheumatology, Vol2, Issue 3,S27:sept 2007.
Sundaram V,Sanyal N. Clinicopathological profile of bronchogenic carcinoma in a tertiary care hospital in eastern part of India. Clinical Cancer Investig J 2014;3:220-4.
Darling HS, Viswanath S, Rajeev V. T- lymphoblastic lymphoma in an undiagnosed rheumatoid arthritis- A rare occurrence. Indian Journal of Rheumatology,Vol. 10, Issue 1,p48-50, 2015.
Viswanath S, Pathak A, Kapoor A, Rathore A, Kapur BN. Changing paradigm in treatment of lung cancer. J Cancer Metasta Treat 2016;2:214-9.
Sundaram V. Sinus histiocytosis with massive lymphadenopathy (Rosai-Dorfman’s disease) with systemic involvement. Afr J Med Health Sci 2016;15:62-4.
Dubey AP, Viswanath S. A case of metastatic insulinoma: Management and review of literature. OGH Reports, 2016; 5(2):79-81.
Viswanath S, Pathak A. Management of HER2-positive breast cancer: A review. J NTR Univ Health Sci 2016;5:87-92.
Pathak A, Viswanath S, Rathore A, Dubey AP. Paraneoplastic limbic encephalitis forgotten etiology of altered sensorium. Int J Adv Med 2016;3:771-3.
Dubey AP*, Viswanath S, Suhag V, Pathak A, Rathore A, Kapoor A. Oral voriconazole causing severe hypokalemia, acute quadriplegia and prolonged qt interval: a rare case report, wjpmr, 2016, 2(2).
Kapoor A, Viswanath S, Ranjan S, Kapur BN. A Clinico demographic Study of Receptor status in Carcinoma Breast. J Carcinog 2016, 15:2(7 April 2016) (ACOS Abstracts):S162.
Rajeev V, Kapur A, Viswanath S, Kapur BN. Primary CNS Lymphoma in Immunocompetent Patient – Case Series. J Carcinog 2016, 15:2(7 April 2016) (ACOS Abstracts):S215.
Purkayasta A, Sharma N, Viswanath S, Sunitha B. Adenoid Cystic Carcinoma of Lung: A oncological rarity treated with definitive chemoradiation.Int JCancer Ther Oncol.2016; 4(3):4315
Purkayastha A, Pathak A, Sharma N, Viswanath S, Dutta V. Primitive neuroectodermal tumor of lungs in adults: a rare series of three cases treated with upfront chemo-radiation. Transl Lung Cancer Res 2016;5(3):350-355.
Pathi N, Viswanath S, Pathak A, Rathore A, Prukayasta A. Receptor tyrosine kinase signalling pathways: a review. Int J Adv Med.2016 Oct 26;3(4):783-9.
Viswanath S, Bhardwaj R, kapoor A. Clinicopathological significance of epidermal growth factor receptor and vascular endothelial growth factor expression in biliary tract malignancies. J NTR Univ Health Sci 2017;6:82-5.
Dubey AP, Vishwanath S, Nikhil P, Rathore A, Pathak A. Microsatellite instability in stage II colorectal cancer: An Indian perspective. Indian J Cancer 2016;53:513-7.
Dubey AP,Singh R, Pathak A, Viswanath S, Rathore A, Pathi N. Clinical profile, prognostication and treatment outcomes in non Hodgkin’s lymphoma. Int J Adv Med 2017;4:1184-8.
Singh R, Viswanath S, Maleskar D. Clinical profile and outcomes of granulocytic sarcoma among myeloid malignancies treated in a tertiary care center. Clin Cancer Investig J 2017;6:56-61.
Carcinoma of the Unknown primary- Knowing the unknown facts. Pathak A, Gupta A, Rathore A, Vishwanath S. World J Pharm Sci2018; 6(1): 40-46.
Dubey A P, Vishwanath S, Nikhil P, Rathore A, Pathak A, Kumar R. Microsatellite instability in stage II and III colorectal cancer: Patterns and profile. Indian J Med Paediatr Oncol [serial online] 2018 [cited 2018 Jan 29];39:36-41.
Dubey A P, Pathi N, Rathore A, Viswanath S, Pathak A, Sud R, Rai S K. Clinicopathological profile of anaplastic lymphoma kinase-positive non small cell lung cancer: An Indian perspective. Indian J Med Paediatr Oncol [serial online] 2018 [cited 2018 Jan 29];39:32-5.
Dubey AP, Rawat K, Pathi N, Viswanath S, Rathore A, Kapoor R, et al. Carcinoma of gall bladder: Demographic and clinicopathological profile in Indian patients. Oncol J India 2018;2:3-6.
Purkayasta A, Sharma N, Viswanath S, Sunitha B. Adenoid Cystic Carcinoma of Lung: A oncological rarity treated with definitive chemoradiation..Int J Cancer Ther Oncol.2016; 4(3):4315
Incidence of K-RAS mutation in metastatic colorectal carcinoma and further to find any associated correlation between K-RAS mutation and various demographic and clinical factors. A Hospital based study(#652) Altaf Ali 1 , A K Dhar 2 , Bhupender Kapur 2 , Dharmesh Soneji 2 , Amul Kapoor 2 , S Viswanath 2 E Poster 2014 WCC
Sharma N, Purkayastha A, Vishwanath S, Jaiswal P. To compare and determine the diagnostic accuracy of [18F]- fluorodeoxyglucose positron emission tomography scan in predicting pathological response in operated carcinoma esophagus patients after initial neoadjuvant chemoradiation and neoadjuvant chemotherapy. World J Nucl Med2018;17:79-85.
Dubey A P, Pathi N, Viswanath S, Rathore A, Pathak A, Sud R. New insights into anaplastic lymphoma kinase-positive non small cell lung cancer. Indian J Cancer 2017;54:203-8
Rathore A, Ranjan S, Vishwanath S, Pathak A, Dubey A P, Nikhil P. BRCA 1 and 2 mutations in carcinoma breast: An Indian study. Clin Cancer Investig J 2018;7:97-103
Darling HS, Viswanath S, Singh Randeep.Medication Related osteonecrosis of Jaw- A medical oncologist’s perspective.International Dental Journal of Student’s Research 2018;6(1):1-6
A clinic- epidemiological, pathological and molecular study of lung cancer in Northwestern India. Darling HS, Viswanath S, Singh R, Ranjan S, Pathi N, Rathore A, Pathak A, Sud R. DOI: 10.4103/jcrt.JCRT_473_17
Lohia, N., Prashar, M., Singh, S,Bhatnagar S, Viswanath S, Anand S, et al.Epidemiological and survival Trends in patients of Cancer of Uterine Cervix Treated with Definitive Concurrent Chemoradiotherapy: Obsevations from a North Indian Hospital Based Cancer Registry. Indian J Gynecol Oncology (2019) 17: 44
Lohia N, Bhatnagar S, Singh S Prasher M, Subramaniam A, Viswanath S, et al. Survival trends in oral cavity cancer patients treated with surgery and adjuvant radiotherapy in a tertiary centre of Northern India. Where do we stand compared to the developed world? SRM J Res Dent Sci 2019,10 26-31.
Prasher M, Soneji D, Viswanath S, Singh S. Cardiotoxicity with sequential use of Antharacycline and Transtuzumab in carcinoma breast patients in a North Indian tertiary care centre. J NTR Univ Health Sci 2019, 8: 83-8.
Bisht N, Bhatnagar S, Viswanath S,Singh S, Lohia N. A comparative study of two protocols of concurrent chemotherapy with external beam radiotherapy in treatment of locally advanced cervical cancer: Cisplatin versus cisplatin plus capecitabine combination. Indian Journal of Gynecologic Oncology (2021)19:18

Field of Expertise

Adrenal Cancer Treatment
Bacillus Calmette Guerin (BCG) Therapy
Benign and Cancerous Tumor Excision
Bile Duct Cancer Treatment
Bone Marrow Transplant
Brain Tumor Surgery
Breast Biopsy
CAR T-Cell Therapy
Carcinoid Tumor Treatment
Castleman Disease Treatment
Chemotherapy
Colon Cancer Surgery
Completion Thyroidectomy
Endometrial Cancer Treatment
Endoscopic Tumor Removal
Ewing Family of Tumors Treatment
Fine Needle Aspiration
Genitourinary Cancer Treatment
Gestational Trophoblastic Disease (GTD) Treatment
High-Intensity Focused Ultrasound (HIFU) for Prostate Cancer
Hormone Therapy
Hyperthermic Intraperitoneal Chemotherapy (HIPEC)
Image-Guided Radiation Therapy (IGRT)
Immunotherapy
Intensity-Modulated Radiation Therapy (IMRT)
Kaposi Sarcoma Treatment
Lumpectomy
Malignant Mesothelioma Treatment
Metastatic Tumor Treatment
Minimally Invasive Cancer Surgery
Nasal Cavity and Paranasal Sinus Cancer Treatment
Nasopharyngeal Cancer Treatment
Non-Small Cell Lung Cancer (NSCLC) Treatment
Oncological Surgery
Papillary Thyroid Cancer Treatment
Penile Cancer Treatment
PET CT Scan
Proton Therapy
Radiation Therapy
Radioisotope Therapy
Rhabdomyosarcoma (RMS) Treatment
Robotic Cancer Surgery
Skin Lymphoma Treatment
Small Intestine Cancer Treatment
Targeted Therapy
Thymectomy
Thymoma and Thymic Carcinoma Treatment
Transarterial Chemoembolization (TACE)
Vaginal Cancer Treatment
Vulvar Cancer Treatment
Whipple Procedure
Acute Lymphoblastic Leukemia (ALL)
Acute Lymphocytic Leukemia
Acute Myeloid Leukemia (AML)
Acute Promyelocytic Leukemia (APL)
Adenocarcinoma
Adenosquamous Carcinoma
Adrenocortical Carcinoma
Adult Hodgkins Lymphoma
AIDS-Related Cancer
Ameloblastoma
Anal Cancer
Anaplastic Carcinoma
Appendix Cancer
Atypical Hyperplasia
Atypical Spindle Cell Tumor
Atypical Teratoid/Rhabdoid Tumor (ATRT)
Bacillus Calmette Guerin (BCG) Treatment for Non-Muscle Invasive Bladder Cancer
Basal Cell Carcinoma (BCC)
Basal Cell Carcinoma of the Skin
Benign Bone Tumors
Benign Hematology
Benign Lung Tumors
Benign Soft Tissue Tumors
Bile Duct Cancer, Stones, & Strictures
Bladder Cancer
Blood Cancer
Bone Cancer
Bone Marrow Cancer
Breast Cancer
Breast Cancer During Pregnancy
Breast Cancer Recurrence
Bronchial Tumors
Burkitt Lymphoma
Cancer in Children
Carcinoid Syndrome
Carcinoid Tumor (Gastrointestinal)
Carcinoid Tumors of the Lungs
Cervical Cancer
Childhood Acute Lymphoblastic Leukemia
Cholangiocarcinoma
Chronic Lymphocytic Leukemia
Chronic Lymphocytic Leukemia (CLL)
Chronic Myelogenous Leukemia
Chronic Myeloid Leukemia (CML)
Chronic Myeloproliferative Neoplasms
Colorectal Cancer
Cutaneous T-Cell Lymphoma
Cyclic Neutropenia
Desmoid Tumor
Ductal Carcinoma in Situ (DCIS)
Elevated PSA (Prostate-Specific Antigen) Level
Embryonal Tumors
Eosinophilia
Esophageal Cancer
Esophagectomy
Esthesioneuroblastoma
Estrogen Dependent Cancers
Ewing Sarcoma
Extracranial Germ Cell Tumor
Extragonadal Germ Cell Tumor
Extrahepatic Bile Duct Cancer
Fallopian Tube Cancer
Familial Adenomatous Polyposis (FAP)
Familial Adenomatous Polyposis (FAP): Inherited
Follicular Lymphoma
Free Flap Surgery for Treating Osteoradionecrosis
Gallbladder Cancer
Gastric Cancer
Gastrointestinal Stromal Tumor (GIST)
Gestational Trophoblastic Disease
Giant Cell Tumor
Gum Tumor
Hairy Cell Leukemia (HCL)
Head and Neck Cancer
Heart Cancer
Hepatocellular Cancer
Hereditary Non-polyposis Colorectal Cancer (HNPCC)
Hurthle Cell Carcinoma
Hypopharyngeal Cancer
Hypopharyngeal Cancer
Immunotherapy
In-situ Breast Cancer
Incontinence After Prostate Surgery
Inflammatory Breast Cancer
Intensity Modulated Radiation Therapy
Intraocular Melanoma
Invasive Breast Cancer
Invasive Lobular Carcinoma
Islet Cell Tumor
Kaposi Sarcoma
Large Cell Carcinoma
Large Granular Lymphocytic (LGL) leukemia
Leukemia
Lip and Oral Cavity Cancer
Liver Cancer
Liver Cysts & Liver Tumors
Lung Cancer
Lymphatic Cancer
Lymphocytosis
Male Breast Cancer
Malignant Fibrous Histiocytoma (MFH)
Malignant Mesothelioma
Malignant Soft Tissue Tumors
Mediastinal Tumor
Medullary Carcinoma
Melanoma
Merkel Cell Carcinoma
Metastatic Cancer
Metastatic Spinal Tumors
Metastatic Squamous Neck Cancer with Occult Primary
Metastatic Tumors
Mouth Cancer
Multiple Endocrine Neoplasia (MEN) Syndromes
Multiple Myeloma
Myelodysplastic Syndromes
Nasal Cavity and Paranasal Sinus Cancer
Nasopharyngeal Cancer
Neuroendocrine Tumor
Non-Small Cell Lung Cancer
NUT Midline Carcinoma
Oncogenic Osteomalacia
Ophthalmic Cancer
Oral Cancer
Oropharyngeal Cancer
Osteosarcoma
Ovarian Cancer
Ovarian Germ Cell Tumors
Ovarian Primary Peritoneal Cancer
Ovarian Sex Cord Stromal Tumor
Pancreatic Cancer
Pancreatic Neuroendocrine Tumor
Paraganglioma
Paraneoplastic Syndromes
Parathyroid Cancer
Parotid Gland Tumor
Pediatric Chordomas
Pediatric Ependymoma
Pediatric Germ Cell Tumor
Pediatric Rhabdomyosarcoma
Pediatric Spinal Cord Tumor
Pediatric Spinal Tumor
Pediatric Vascular Tumors
Penile Cancer
Pharyngeal Cancer
Pheochromocytoma
Pigmented Villonodular Synovitis (PVNS)
Pineal Region Tumor
Plasma Cell Neoplasms
Pleural Tumor
Pleuropulmonary Blastoma
Prostate Cancer
PTEN Hamartoma Tumor Syndrome (Cowden Syndrome and Bannayan-Riley-Ruvalcaba Syndrome)
Pulmonary Nodules
Pure Red Cell Aplasia (PRCA)
Rectal Cancer
Recurrent Cancer
Relapsed ALL
Relapsed AML
Relapsed Multiple Myeloma
Renal Cell Cancer
Retinoblastoma (Cancer of the Eye)
Retroperitoneal Tumor
Rhabdomyosarcoma
Salivary Gland Cancer
Sarcoma
Sezary Syndrome
Skin Cancer
Skull Base Tumor
Small Cell Carcinoma
Small Cell Lung Cancer
Small Intestine Cancer
Soft Tissue Sarcoma
Spinal Tumor
Squamous Cell Carcinoma (SCC)
Stage 4 Cancer
Stomach Cancer
Sun Exposure & Skin Cancer
Synovial Sarcoma
Testicular Cancer
Throat Cancer
Thrombocytosis
Thymoma and Thymic Carcinoma
Thymus Gland Tumor
Thyroid Cancer
Tracheobronchial Tumor
Transitional Cell Cancer
Urethral Cancer
Uterine Sarcoma
Vaginal Cancer
Vascular Tumor
Vulvar Cancer
Wilms Tumor