Vascular diagnosis and management of risk factors, carotid, aortic and peripheral arterial and venous disease. He continues a consultation practice in his West Toronto office and ultrasound facility.

Acute care surgery and laparoscopic gastrointestinal surgery
adrenalectomy biliary and pancreatic surgery
Adult cardiac surgery
Advanced laparoscopy
Advanced minimally invasive surgery Gastrointestinal
All vascular conditions with special interest in aortic surgery and new endovascular technologies for the treatment of peripheral arterial disease.
and breast
and complex surgical problems
and rectal cancer
and Stomach Cancer Foregut surgery Hyperhidrosis
Aneurysmal disease of the aorta Carotid disease Visceral occlusive disease Traumatic aortic tears Non-invasive vascular laboratory assessment Thoracic outlet syndrome
aortic and peripheral arterial and venous disease. He continues a consultation practice in his West Toronto office and ultrasound facility.
Aortic Aneurysm
Aortic pathology & adult congenital
Aortic Surgery
arterio-venous fistula construction
Assessment of high risk of cardiac surgery. Prospective randomized clinical trials assessing insulin cardioplegia and stentless aortic valves.
bariatric surgery
Benign and Malignant Diseases of the Breast
Benign esophageal diseases;Thoracic surgical oncology
Bicuspid aortopathy
bowel resections
Brain tumors
Breast and melanoma
Breast Cancer
Breast Cancer and melanoma
Breast cancers
Breast Disease & General Surgery
Breast Surgery
Cardiovascular pathology
carotid
Carotid artery disease
carotid artery surgery
Carotid revascularization
Carotid surgery
Cerebral arterial bypass surgery
Cerebrovascular surgery
chest deformities
Chronic wound care
Colon and Rectal Surgery
Colorectal and General Surgery
Colorectal Disease
Colorectal neoplasia and inflammatory bowel disease
Colorectal Oncology
Colorectal Surgery
Coronary revascularization
critical care
critical care & basic science research
Critical Care and General Surgery
Diseases of the breast
End vascular treatment ofcomplex aortic pathology. Carotid surgery
Endocrine and Thyroid Surgery
endoscopy
Endovascular Surgery
Endovascular treatment of complex aortic pathology. Carotid surgery.
Esophageal Cancer
Esophageal Cancer; Lung Cancer; Benign Disease of the Esophagus; Video assisted thoracic surgery; Clinical Trials; Thoracic oncology
esophagus and mediastinum.
Evaluating & improving surgery outcomes for GI malignancies
External abdominal wall hernias
Fetal and neonatal surgery Hirschsprung’s disease and inflammatory bowel disease Pediatric minimal access surgery
gastric cancer
Gastro-esophageal
gastrointestinal stromal tumour
General Surgery
General surgical oncology with particular emphasis on head and neck disease and surgical endocrinology.
General Surgical Oncology: Surgery of the gastrointestinal tract
General Thoracic Surgery Lung Transplantation Lung Volume Reduction Surgery Minimally invasive thoracic surgery Lung Cancer
General vascular surgery
GI oncology
Head and neck endocrine surgery
hepatic and biliary malignancies
Hepatobiliary
hepatobiliary & pancreatic surgery
Hepatobiliary Surgery
Hernias
His specialty interests include open/endovascular abdominal and thoracic aortic aneurysm repair
image guided therapeutics and diagnostics.
including diseases of the lung
Infections
Infective endocarditis
Infrarenal and Thoracoabdominal Aortic Aneurysm disease, Acute and Chronic Aortic Dissection, Visceral Artery aneurysms, Vasculitides of the Aorta and its branches, including Takayasu’s and Giant Cell arteritis, and renovascular disease.
inguinal hernia repair.
international surgery
Intestinal Failure
Intracranial aneurysms and vascular malformations
Intracranial tumors
Kidney/Pancreas/Liver Transplantation
Laparoscopic colorectal surgery & locally advanced colorectal cancer
Laparoscopic surgeries Endoscopy Excision of benign skin lesions Benign & malignant breast conditions
Laparoscopic Surgery
Laparoscopic Surgery and Endoscopy
Limb preservation, open and endovascular treatment of aortic disease, stroke risk reduction surgery.
Limb salvage in peripheral arterial disease; Vascular access surgery; Management of lower limb venous disease; Aortic aneurysmal disease
Liver
Living & deceased abdominal organ donor transplantation in adults & children
Lower Gastrointestinal Surgical Oncology
Lung and esophageal cancer
Lung cancer
Lung Transplantation
management of genitourinary malignancies
mediastinal tumours and metastatic cancers to the chest.
Mediastinal) Surgery General Thoracic Oncology including : Lung Cancer
melanoma
Minimally invasive abdominal and gastrointestinal surgery
Minimally invasive abdominal surgery including: hiatus hernia repair
Minimally Invasive Gastrointestinal Surgery
Minimally invasive gastrointestinal surgery & endocrine surgical oncology
Minimally invasive procedures
Minimally invasive surgery
Minimally Invasive Surgery and Colorectal Oncology
minimally invasive surgery and the treatment of hyperhidrosis.
Minimally Invasive Techniques
Minimally Invasive Thoracic (Lung
Minimally Invasive Thoracic and Foregut Surgery
minimally invasive thoracic surgery (VATS)
minimially invasive thoracic oncology
Mitral valve repair
Mitral valve repair, robotic and minimally invasive cardiac surgery, aortic reconstructive surgery.
Neurooncology
Neurosurgery
Oncology
open and endovascular aneurysm repair.
open and endovascular intervention for peripheral arterial disease
open and endovascular treatment of aortic disease
Paediatric chest surgery
pancreas and kidney transplantation
Pancreatic and Gastrointestinal Surgical Oncology
pancreatic and GI cancer
particularly gastric cancer
Pediatric general surgery
pediatric liver and small bowel transplantation
Pediatric surgical oncology
peripheral artery bypass/intervention
quality improvement.
Redo operations
Retroperitoneal sarcoma
Short Bowel Syndrome
Spinal diseases in cancer population
Spinal tumors
Spinal vascular malformations
Spine stereotactic body radiotherapy (SBRT) as an effective therapy for patients with spinal tumors
Spine stereotactic body radiotherapy (SBRT) as an effective therapy spinal tumors
Spine stereotactic body radiotherapy (SBRT) as therapy for spinal tumors
Spine stereotactic body radiotherapy (SBRT) for spinal tumors
Spine stereotactic body radiotherapy for spinal tumors
splenectomy
Sports Medicine and Arthroscopy Special interest: Biologics | Cartilage Restoration
Surgery for advance heart failure
Surgery of aortic valve disease and ascending aorta
surgery of the endocrine system
Surgery of the head and neck
surgical infection
Surgical Infection and Nutrition and Metabolism in the Surgical Patient
Surgical Oncology
Surgical revascularization including arterial revascularization
Surgical treatment of pancreatic
Thoracic oncology
Thoracic oncology Mesothelioma Tumor of the cervico-thoracic junction Pulmonary vascular disease Lung and heart-lung transplantation Pulmonary thromboendarterectomy
Thoracic Surgery Lung and heart-lung transplantation Tracheal surgery
Thoracic Surgical Oncology Mediastinal and airways disease
thyroid & breast malignancies
thyroid and parathyroid gland
Transcatheter Heart Valves
Transplantation
Trauma
Trauma & Critical Care Medicine
Trauma and International Health
Trauma Surgery
Trauma/Critical Care
Traumatology
Upper GI Surgery
Vascular and endovascular surgery
Vascular diagnosis and management of risk factors
Vascular Laboratory
vascular thoracic outlet syndrome
vascular ultrasonography and vascular access for hemodialysis
Vavlular surgery
venous disease
venous disease as well as thoracic outlet syndrome.
with particular focus on prostate and kidney cancers. This includes minimally invasive robotic surgical techniques

1) evidence-based in-class approaches to teaching,
2) meaningful student assessments
2) meaningful student assessments,
2) meaningful student assessments, and
3) vocationally relevant course design.
Anatomy education for the clinical health sciences
Anatomy education for theclinical health sciences
and 3) vocationally relevant course design.
and a new valve trial.
apoptosis
Applied anatomy education for the clinical health sciences
applied and active approaches to the instruction of musculoskeletal anatomy
applied and active approaches to the instruction of musculoskeletalanatomy
As the lead PI for the ATLAS Research Lab, the overarching objectives of my program of research are to enhance student learning through
As the lead PI for the ATLAS Research Lab, the overarching objectives of my program of research are to enhance student learning through 1) evidence-based in-class approaches to teaching
assessment of technical skills
ASSET programs)
astrocytes
Atherosclerosis – basic and translational science
Atherosclerosis – basic and translational science Diabetes and cardiovascular disease – basic and translational science Clinical trials in cardiovascular surgery and diabetes Clinical trials in heart failure and diabetes
ATLS and ATOM courses
ATOM
Aurvival surgery
Biobank and translational studies
Breast cancer prevention trails
Breast Teaching
Cardiac surgical trials
Cerebral blood flow
cerebral vasospasm
Cerebrovascular disease
Clinical epidemiology
Clinical outcome studies in Minimally Invasive Surgery
Clinical outcomes in surgical revascularization and valvular surgery
Clinical Outcomes Pediatric Liver Transplantation
Clinical studies in the field of hepatobiliary surgery
clinical surgical oncology
clinical trials
Clinical trials in cardiovascular surgery and diabetes
Clinical trials in heart failure and diabetes
clinical trials of immune suppression
Clinical trials regarding the optimal breast cancer treatment
Current and Future Health Care Policy in Canada
Currently completing a Master's program in Epidemiology.
Degenerative and Neoplastic diseases of the spine
development and evaluation of new surgical technologies.
Development of optical imaging/therapeutic technologies for vascular intervention
Diabetes and cardiovascular disease – basic and translational science
Director of ATLS program at Sunnybrook)
DNA microarray
Dr. Ahmadi has a particular research interest in population health and improving surgical outcomes in thoracic patients.
Dr. Arjun Sahgal is a leader in the field of high precision stereotactic radiation to the brain and spine.
ductoscopy
engineering patient flow through the diagnostic and treatment journey.
Ethics
Focused Ultrasound Brain Surgery
Functional anatomy and rehabilitation
gene therapy
Geriatric trauma and emergency surgery
Global Child Health
health services regarding optimal delivery of treatments
imaging
immunosuppression
Improving long term right ventricular function in tetralogy of Fallot Engineering cardiac muscle from human umbilical cord tissue blood Accelerating lung maturation in neonates Gene expression in congenital cardiac surgery
infection/inflammation
intracellular signaling
Knowledge transfer activities in surgical education for residents and practicing surgeons
Liver transplantation
lung injury
lung regeneration
Lung transplantation
Medical Ethics and Education
melanoma sentinel node pathology
Minimal access radioguided parathyroid surgery
minimally invasive surgery
Molecular and Surgical Oncology
Neural stem cell biology and regenerative medicine
Neuro-Oncology
Neuroblastoma
neurodegeneration
neuroprotection
organ preservation
outcomes research
Outcomes research in community pediatric surgery Hirschsprung’s disease Pediatric minimal access surgery
pre-clinical surgical training and transition from residency to independent practice.
proteomics
Quality of Life & Cancer Survivorship
randomized trial comparing OBCAB to conventional bypass surgery
Research in thymic and lymphocyte developmental biology and malignancy development
Research interests involve gene therapy for end stage coronary artery disease using VEGF genes
Research into the metabolic cause of hernias History of medicine
retina
retinal ganglion cell
RTTDC
Search Waddell alphabetically http://www.uhnres.utoronto.ca
sentinel lymph node biopsy
small bowel transplantation
specifically for musculoskeletal conditions.
Stereotactic radiation to the brain and spine.
Strategies for successful interprofessional education
strategies for successful interprofessionaleducation
stroke
Students assessment for/of learning
Subarachnoid hemorrhage
surgical education
surgical epidemiology and clinical epidemiology
Surgical outcomes research
Surgical perspectives on palliative medicine
Surgical Quality Improvement and Surgical Outcomes
surgical simulation
Surgical Simulation and Knowledge Translation
survival surgery
Systematic review and meta-analysis
TEAM
Telemedicine/Teleconferencing; Aortic Aneurysm Research
Tolerance Induction
Translation breast cancer research
Transplantation
Transplantation tolerance
Trauma Education (Director ATLS
Trauma education (undergraduate trauma education
trauma systems
use of the Surgical Skills Laboratory in Resident Education.
xenotransplantation

Faculty Members

Christopher Witiw

Ian Witterick

Carin Wittnich M.D.

Jesse Wolfstadt

Sydney Wong MD, FRCSC

Paul Wong M.D.

Karen Wong

Nicole Woods Ph.D.

Neil Woolfson

Douglas Wooster M.D., F.R.C.S.C

Clinical Interests

Pagination