Christopher Loiselle
Christopher Loiselle, M.D.

Christopher Loiselle, M.D.

Christopher Loiselle, M.D.

Oncology - Radiation

Clinical Interests / Special Procedures Performed

Breast Cancer, Cancer Institute, CyberKnife, Gamma Knife, Gastrointestinal Cancer, Gynecologic Cancer, Head and Neck Oncology, Lung Cancer, Lymphoma, Sarcoma, Skin Cancer

  • Accepting Children: Yes
  • Accepting New Patients: Yes
  • Accepting Medicare: Yes
  • Accepting Medicaid/DSHS: Yes
Insurance Accepted:

Contact this office for accepted insurance plans

Philosophy of Care

Patient centered, team directed care prioritizing patient’s goals and concerns

Medical School

Johns Hopkins University School of Medicine


University of Washington/Seattle Cancer Care Alliance


English and Spanish

Professional Associations:

American Society for Therapeutic Radiology and Oncology, American Brachytherapy Society


Roger E. Moe Breast Cancer Clinical Research Fellow, July 2010-2011


Loiselle C, Eby PR, Kim JN, Calhoun KE, Gadi VK, Peacock S, Storer B, Mankoff DA, Partridge SC, Lehman CD. Can preoperative Dynamic Contrast Enhanced Breast MRI Predict Extensive Occult Axillary Lymph Node Metastases in Patients With Positive Sentinel Node Biopsy? J Clin Oncol 29: 2011 (suppl; abstr 1049).

Loiselle C, Fang L, Koba S, Parvathaneni U, Nghiem P. Definitive Radiation Therapy for Merkel Cell Carcinoma (Abstract). International Journal of Radiation Oncology, Biology, and Physics. 2010, 78 (Supplement 3): S610-11.

King BL, Loiselle CR, Carlson TP, Werner HA, Koh W. Clinical Outcomes for Tandem and Ring Brachytherapy for Cervix Cancer at the University of Washington (Abstract). International Journal of Radiation Oncology, Biology, and Physics. 2010, 78 (Supplement 3): S400-401.

Loiselle C, Eby PR, Peacock S, Kim JN, Lehman CD. A Dynamic Contrast Enhanced MRI Kinetic Parameter Indicating Lymph Node Extracapsular Extension (Abstract). International Journal of Radiation Oncology, Biology, and Physics. 2009, 75 (Supplement 3): S182.

Loiselle CR, Eby PR, Peacock S, Lehman CD, Kim JN. Dynamic Contrast Enhanced MRI Kinetics and Invasive Breast Cancer: A Potential Prognostic Marker for Radiation Therapy (Abstract). International Journal of Radiation Oncology, Biology, and Physics. 2008, 72(Supplement 1):S176.


Loiselle C, Eby PR, Kim JN, Calhoun KE, Gadi VK, Peacock S, Storer B, Mankoff DA, Partridge SC, Lehman CD. Preoperative MRI Improves Prediction of Extensive Occult Axillary Lymph Node Metastases In Breast Cancer Patients With A Positive Sentinel Lymph Node Biopsy. Submitted May 2012 to the Breast Journal.

Loiselle C, Koh W. The Emerging Use of IMRT for Treatment of Cervical Cancer. Accepted (minor revisions pending). The Journal of the National Comprehensive Cancer Network. 2010, 8(12):1425-34.

Loiselle CR, Eby PR, Peackock S, Kim JN, Lehman CD. Dynamic Contrast Enhanced MRI and Invasive Breast Cancer: Primary Lesion Kinetics Correlated with Axillary Lymph Node Extracapsular Extension. Journal of Magnetic Resonance Imaging. 2011, 33(1):96-101.

Loiselle CR, Eby PR, Demartini WB, Peacock S, Bittner N, Lehman CD, Kim JN. Dynamic Contrast-Enhanced MRI Kinetics of Invasive Breast Cancer: A Potential Prognostic Marker for Radiation Therapy. Int J Radiat Oncol Biol Phys. 2010, 76 (5):1314-9.

Loiselle C, Rockhill J. Radiation, chemotherapy, and symptom management in cancer-related cognitive dysfunction. Curr Pain Headache Rep. 2009, 13(4):271-6.

Loiselle CR, Waheed M, Sylvester J, Allen ZA, Grimm PD, Eulau S, Butler WM, Merrick GS. Analysis of the Pro-Qura Database: rectal dose, implant quality, and brachytherapist's experience. Brachytherapy. 2009, 8(1):34-9.

Hong JJ, Loiselle CR, Yoon DY, Lee O, Becker KG, Singer HS. Microarray analysis in Tourette syndrome postmortem putamen. Journal of the Neurological Sciences. 2004;225(1-2):57-64.

Singer HS, Loiselle CR, Lee O, Minzer K, Swedo S, Grus FH. Anti-basal ganglia antibodies in PANDAS. Mov Disord. 2004;19(4):406-15.

Singer HS, Loiselle C. PANDAS: a commentary. J Psychosom Res. 2003;55(1):31-39.

Singer HS, Loiselle CR, Lee O, Garvey MA, Grus FH. Anti-basal ganglia antibody abnormalities in Sydenham chorea. J Neuroimmunol. 2003;136(1-2):154-61.

Loiselle CR, Wendlandt JT, Rohde CA, Singer HS. Antistreptococcal, neuronal, and nuclear antibodies in Tourette syndrome. Pediatr Neurol. 2003;28(2):119-25.

Loiselle CR, Singer HS. Genetics of childhood disorders: XXXI. Autoimmune disorders, part IV: Is Sydenham Chorea an autoimmune disorder? J Am Acad Child Adolesc Psychiatry. 2001; 40:1234-6.


Loiselle CR, Kane G, Neligan P. Osteoradionecrosis following radiotherapy. In Neligan P and Wei F (Eds.), Microsurgical Reconstruction of the Head and Neck. St. Louis, MO; Quality Medical Publishing, Inc. 2009.

What are the options when lung cancer is inoperable?

November is Lung Cancer Awareness Month and for those who have been diagnosed with lung cancer, one dreaded word is inoperable. Many feel defeated when they hear they are not candidates for surgery, but promising non-surgical treatments are available. CyberKnife, a form of stereotactic body radiation therapy (SBRT), is one of these options.

Radiation treatment to a moving target adds a level of complexity. However, CyberKnife tracks a tumor and directs targeted radiation via a state of the art robotic arm. Most patients complete their treatment in 3 to 5 days.

Highly focused radiation has become the standard of care for treating medically inoperable early stage non-small cell lung cancer with excellent results.

This video demonstrates the robotic real-time tracking of the CyberKnife.

Trigeminal Neuralgia: Face Pain & Treatment Options

October 7th was Trigeminal Neuralgia Awareness Day and for many reading or hearing the stories, like the story on, this condition may not be familiar.  However, for those suffering from trigeminal neuralgia, every day can be challenging.

Facial pain in Trigeminal Neuralgia is characterized by episodes of intense pain lasting from a few seconds to hours at a time. The attacks are often described as electric shock like, burning, pressing, crushing,  or shooting pain. Patients describe areas on the face as sensitive to the point that even a gentle breeze of wind can trigger an episode of pain.

Once diagnosed, trigeminal neuralgia can be treated with ...

Essential Tremor: What it is and how to treat it

Do you or someone you know shake when raising a glass of water to drink or have problems writing a check at the grocery store?

If so, essential tremor may be the cause. Essential Tremor (ET) is the most common movement disorder and those suffering from it experience uncontrolled movement , usually of the hands and arms. Over 10 million Americans are diagnosed, yet many people have never heard of it. Some assume shaking is just a sign of aging or they fear they may have Parkinson’s disease. ET differs from Parkinson's in many ways, one being ET is an "action" tremor (more pronounced when trying to complete a task) where a person with Parkinson's has tremors more often at rest and the shaking may actually lessen during activity.

Essential Tremor is caused by overactive cells in the area of the brain called the thalamus. The thalamus is about the size of a walnut and within the brain there are two of them. If there are overactive cells in the right thalamus, the person will have signs of tremor on the left side and vice versa. Some patients suffer from tremor on both sides.

It is important to know Essential Tremor is a treatable condition.

There are three common methods of treatment:

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