Douglas A. Stewart MD FRCPC


Breast Cancer

Breast cancer happens when cells in your breast grow abnormally and out of control. The cancer cells can spread to other parts of your body. You’re more likely to get breast cancer as you get older. Breast cancer is the second most common type of cancer in women. Men can also get breast cancer, but this is rare.

Triple-Negative Breast Cancer

Triple-negative breast cancer is a less common type of breast cancer. Triple-negative means that the breast cancer cells don’t have three things—estrogen receptors, progesterone receptors, or large amounts of HER-2 protein. This type of breast cancer tends to spread more quickly than other types. Treatments such as…

Lobular Carcinoma in Situ (LCIS)

Lobular carcinoma in situ (LCIS) is a type of noninvasive breast cancer that is confined to the cells lining the very end of the milk ducts (lobules) in the breast. LCIS has some of the characteristics of cancer cells but does not invade surrounding breast tissue or other structures. LCIS is usually located in more than…

Lymphoma

A lymphoma is a type of cancer that affects the lymph system, which is part of the body’s immune system. The two main types of lymphoma are Hodgkin lymphoma and non-Hodgkin lymphoma. Lymphomas are more common in men than in women. In most cases the cause is not known. Symptoms of lymphoma include swelling in one or more…

Breast Cancer

Breast cancer happens when cells in your breast grow abnormally and out of control. The cancer cells can spread to other parts of your body. You’re more likely to get breast cancer as you get older. Breast cancer is the second most common type of cancer in women. Men can also get breast cancer, but this is rare.