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Radiation therapy is a highly effective treatment modality for patients with cancer. Used alone, or in combination with other approaches like surgery or chemotherapy, it can cure many patients and control tumours to reduce symptoms and improve quality of life.

We provide consultations for patients with all types of cancer, recommend treatment approaches, deliver safe and effective radiation treatments and offer ongoing follow-up care.

Our team is organized into cancer Site Groups that have developed treatment protocols based on research evidence. These protocols guide decisions on the role, indications and benefits of radiation therapy in specific, individual circumstances.



Breast Sit​e Group

The Princess Margaret Breast Site Group treats common, rare, and complex forms of breast cancer. Our award-winning QuickStart Program offers one-day radiotherapy for early-stage breast cancer. We offer personalized, state-of-the-art radiation treatment, including:

  • Techniques to minimize doses to normal tissues (e.g. heart, lungs): activated breathing control and partial breast irradiation.
  • Use of molecular testing/cancer biology to improve radiotherapy management.
  • Stereotactic ablative radiotherapy for oligometastatic/oligoprogressive disease.
  • Innovative cutting-edge clinical trials.

Learn more about the inter-professional Breast Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Jennifer Croke
Radiation Physics Lead:
Tom Purdie
Radiation Therapy Lead:
Susanne Lofgren
Referral Coordinator:
Anila Samji
Tel:   416 946 4501 ext. 3639
Fax:   416 946 4657
breastreferrals@rmp.uhn.ca

Central Nervous System Site Group

The Princess Margaret's Central Nervous System Tumour Program treats common and rare tumours of the central nervous system. Our service is divided into four specific clinical programs which encompass all primary and secondary brain and spinal cord tumours. Each program offers a multidisciplinary conference of cases referred for potential treatment.

Learn more about the inter-professional Central Nervous System & Eye Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Barbara-Ann Millar
Radiation Physics Lead:
Anthony Lausch
Radiation Therapy Lead:
Yilan Lu
Referral Coordinator:
Melanie Robson
Tel:   416 946 2901
Fax:   416 946 4657
Para-Spinal SBRT Radiation Site Group Lead:
David Shultz
Physicians:

Para-Spinal SBRT Physicians

Eye Site Group

The Princess Margaret’s Ocular Oncology Program provides comprehensive care to patients with cancers of the eyes, orbits and adjacent tissues (conjunctiva, lacrimal glands, eyelids). We treat most cases of choroidal melanoma in Canada, and have helped establish programs in Vancouver, Edmonton and Montreal to help patients receive treatment closer to home. We offer state-of-the-art radiotherapy for ocular oncology, including:

  • Superficial orthovoltage radiotherapy to treat eyelid cancers while completely protecting the underlying eye from any radiotherapy dose exposure.
  • Conventional high energy photon radiotherapy to treat deep tumours in the orbits or intra-ocular tumours with the aim of vision preservation in most cases, while controlling most of the cancers in these regions.
  • Iodine-125 brachytherapy for choroidal melanomas with excellent tumour control rates and avoiding enucleation in the large majority of cases (97% eye retention rate).

Learn more about the inter-professional Central Nervous System & Eye Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Normand Laperriere
Radiation Physics Lead:
Monique van Prooijen (Eye EBRT)
Akbar Beiki-Ardakani (Eye Brachytherapy)
Radiation Therapy Lead:
Kathy Man (Eye)
Anisha Patel (Eye Brachytherapy)
Referral Coordinator:
Sheryll Vergara
Tel:   416 946 2130
Fax:   416 946 4657

Endocrine Site Group

The Princess Margaret Endocrine Site Group treats common, rare and complex cancers of the thyroid, parathyroid, pituitary gland, pancreas, adrenal glands and neuroendocrine tumours, drawing on cutting-edge technology and treatments. We offer state-of-the-art radiotherapy, including:

  • External beam radiotherapy (IMRT and Gamma Knife radiation) for tumours of the thyroid and pituitary.
  • Redefining the role of radioactive ablation in differentiated thyroid cancer.

We also spearheaded the Ontario clinical trial in the use of Peptide Receptor Radionucleotide Therapy (PRRT) for well differentiated neuroendocrine tumours.

Learn more about the inter-professional Endocrine Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Richard Tsang
Radiation Physics Lead:
Mohammad Islam
Radiation Therapy Lead:
Kathy Man
Referral Coordinator:
Sheryll Vergara
Tel:   416 946 2130
Fax:   416 946 4657
Physicians:

Gastrointestinal Site Group

The Princess Margaret Gastrointestinal Site Group treats all stages and categories of GI cancers, including rare, difficult-to-treat, and advanced-stage malignancy of the upper GI (esophagus and stomach), hepatobiliary cancer (liver, bile duct and pancreas), as well as lower GI (colorectal and anal cancer). We offer state-of-the-art radiation therapy technology, including:

  • Intensity-modulated radiation therapy (IMRT)
  • Volumetric modulated arc therapy (VMAT)
  • Image-guided radiation therapy (IGRT)
  • Stereotactic body radiation therapy (SBRT)
  • MR-Linac guided radiation therapy

Our program works within the Comprehensive Cancer Center’s multidisciplinary services. Cancer conferences are attended by GI specialists across many disciplines. We discuss challenging and new GI clinical cases to derive consensus for optimal management, providing comprehensive care tailored to each patient’s needs. We also offer many clinical trials, ranging from early to late phase, aiming to improve patient outcomes with fewer side effects.

Learn more about the inter-professional Gastrointestinal Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Ali Hosni
Radiation Physics Lead:
Teodor Stanescu (Upper GI)
Patricia Lindsay (Lower GI)
Radiation Therapy Lead:
Diana Lee (Upper GI)
Louise Wei (Lower GI)
Referral Coordinator:
Jennell Harmon
Tel:   416 946 2902
Fax:   416 946 4657
Physicians:

Genitourinary Site Group

The Princess Margaret Genitourinary Site Group treats common, rare and complex forms of cancer affecting the bladder, kidney, urethra, ureters, prostate and testes.

Learn more about the inter-professional Genitourinary Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Peter Chung
Radiation Physics Lead:
Jeff Winter (EBRT)
Robert Weersink (Brachytherapy)
Radiation Therapy Lead:
Jennifer Dang
Anisha Patel (Brachytherapy)
Referral Coordinator:
Anila Samji
Tel:   416 946 4501 ext. 3639
Fax:   416 946 4657
Physicians:

Gynecologic Site Group

The Princess Margaret Gynecologic Site Group treats common, rare and complex forms of cervical, endometrial, ovarian, peritoneal, tubal, vaginal and vulvar cancer. The Magnetic Resonance guided Radiation Therapy (MRgRT) suite at the Princess Margaret Cancer Centre is the first of its kind in Canada. We offer state-of-the-art, high-precision external radiation and brachytherapy treatment, including:

  • Image-guided volumetric modulated arc therapy (VMAT)
  • MRI-based adaptive intracavitary/interstitial brachytherapy
  • Cutting-edge clinical treatment studies

Learn more about the inter-professional Gynecologic Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Kathy Han
Radiation Physics Lead:
Tony Tadic (EBRT)
Alexandra Rink (Brachy)
Radiation Therapy Lead:
Lian Velasco
Referral Coordinator:
Anila Samji
Tel:   416 946 4501 ext. 3639
Fax:   416 946 4657
Physicians:

Head & Neck Site Group

The Princess Margaret Head and Neck Centre treats common, rare and complex forms of cancer of the lips and mouth, oropharynx, hypopharynx, larynx, nasal cavity and sinus, nasopharynx, salivary glands and thyroid.

Learn more about the inter-professional Head & Neck Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
John Waldron
Radiation Physics Lead:
Andrea McNiven
Radiation Therapy Lead:
Natassia Naccarato
Referral Coordinator:
Melanie Robson
Tel:   416 946 2901
Fax:   416 946 4657

Lung Site Group

The Princess Margaret Lung Site Group treats common, rare and complex forms of lung cancer.

Learn more about the inter-professional Lung Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Alexander Sun
Radiation Physics Lead:
Jean-Pierre Bissonnette
Radiation Therapy Lead:
Olive Wong
Referral Coordinator:
Jennell Harmon
Tel:   416 946 2902
Fax:   416 946 4657

Lymphoma & Myeloma Site Group

The Princess Margaret Lymphoma and Myeloma Site Group treats lymphoproliferative disorders, including non-Hodgkin’s and Hodgkin’s lymphoma, acute and chronic leukemias, multiple myeloma and related plasma cell disease. We also perform specialized bone marrow stem cell transplants (autologous and allogeneic). New innovative treatments such as chimeric antigen receptor (CAR) T-cell therapy, and promising drugs in clinical trials research are also offered. We work closely with the Lymphoma, Myeloma, Leukemia and Stem cell transplant services to offer state-of-the-art precision radiotherapy and total body irradiation therapy. Clinical and technical innovations include:

  • Respiratory control methods to focus precisely on lymph node targets in the chest and reduce collateral radiation exposure to important structures such as the lungs and heart.
  • Intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) to achieve precise conformal targeting.
  • Access to clinical trials of new treatment approaches in radiation delivery.
  • Bridging radiation therapy with CAR T-cell therapy or stem cell transplants.

Learn more about the inter-professional Lymphoma & Myeloma Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Richard Tsang
Radiation Physics Lead:
Harald Keller
Radiation Therapy Lead:
Aleksandra Petrovska
Referral Coordinator:
Jennell Harmon
Tel:   416 946 2902
Fax:   416 946 4657
Physicians:

Melanoma & Skin Site Group

The Princess Margaret Melanoma and Skin Site Group treats common, rare and complex forms of melanoma and skin cancer.

Learn more about the inter-professional Melanoma & Skin Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Alexander Sun
Radiation Physics Lead:
Andrei Damyanovich
Radiation Therapy Lead:
Steven Tran
Referral Coordinator:
Jennell Harmon
Tel:   416 946 2902
Fax:   416 946 4657
Physicians:

Sarcoma Site Group

The Princess Margaret/Mount Sinai/University of Toronto multidisciplinary sarcoma clinic provides clinical care of soft-tissue and bone sarcomas with specific expertise in thoracic, head and neck, gynecologic oncology and neuro and spine surgery to provide the most comprehensive management for every clinical case. We are committed to research, and have a portfolio of clinical trials investigating:

  • The optimal way of combining surgery and radiotherapy for extremity tumours.
  • Biomarkers for sarcoma.
  • Early and late phase clinical trials of chemotherapy and targeted drug therapy.
  • We maintain one of the largest clinical databases of treated cases and collaborate with international sarcoma research consortia.
  • We have a first in Canada Adolescent and Young Adult program to provide social and psychological support to young adults facing life-altering illness.

Learn more about the inter-professional Sarcoma Site Group and its specialized, innovative programs to assess, plan and treat cancer at all stages.

Radiation Site Group Lead:
Charles Catton
Radiation Physics Lead:
Robert Heaton
Radiation Therapy Lead:
Samuel Appiah
Referral Coordinator:
Samina Noman
Tel:   416 946 2130
Fax:   416 946 4657
Physicians:
https://www.uhn.ca/PrincessMargaret/Education/Continuing_Education_Programs/Pages/continuing_education_programs.aspx
Last reviewed:
Last modified: 11/24/2022 8:13 AM