University Health Network

Toronto General Hospital | Toronto Western Hospital | Princess Margaret Cancer Centre

Dr. Sami Chadi

Dr. Fayez Quereshy

Dr. Catherine O’Brien

About Us

We are sub-specialty trained surgical oncologists and colorectal surgeons, licensed by the Royal College of Surgeons of Canada, and by the American College of Surgeons.

Research and Clinical Trials

The Colorectal Cancer Program at UHN is involved in both fundamental research and clinical research. Talk to your surgeon if you are interested in participating in a clinical trial with the Colorectal Cancer Program at UHN.

Patient Referral

We are happy to see any patient in consultation, whether it be for a first opinion, second opinion, or twenty-second opinion. Simply ask your family physician or other healthcare provider for a referral to the program.

Patient Journey

Diagnosis and Testing

Receiving the news and preparing for treatment.

Meeting the Surgical Team

Scheduling your appointments and procedures.

Preparing for Surgery

Exercise, nutrition, and more.

One week before the operation

Meeting your surgeons and anesthesiologists.

One day before the operation

Bowel cleanse and dietary changes.

Day of the operation

What to expect when arriving for your operation, undergoing your operation, and waking up from your operation.

Post-operative hospital stay

Recovering in hospital and at home.