Map of Simcoe Muskoka

Leading Causes

Leading Causes Of Cancer Incidence

All Ages

Males

Females

Children & Youth

Adults

Cancer incidence data are derived from the Ontario Cancer Registry (OCR) operated by Cancer Care Ontario. The OCR contains information on Ontario residents who have been newly diagnosed with all types of malignant cancers, with the exception of basal cell and squamous cell (non-melanoma) skin cancers. Cancer sites were coded using the Third Edition of the International Classification of Diseases for Oncology (ICDO-3). Beginning in 2014, the OCR adopted the National Cancer Institute (NCI) SEER standards for counting multiple primaries for cancer cases diagnosed in 2010 and beyond. This standard is more liberal than the previously used case counting rules from the modified version of the International Association of Cancer Registries (IACR). Cancer data presented on this and other HealthSTATS pages only includes cases captured using the more conservative IACR definition for all years in order to maintain comparability over time. As a result, figures presented on HealthSTATS may be lower than those reported by Cancer Care Ontario as they are using the revised counting methodology.

All Ages

Over the six years between 2007 and 2012, there were 18,082 new cancer cases diagnosed among residents of Simcoe Muskoka (9,585 among males and 8,497 among females). The leading causes of cancer are different for adult males and females so the data will be presented separately. The leading causes of cancer incidence for children and youth will be presented together for both sexes combined due to smaller numbers of new cancer cases.

Males

The number one cause of new cancer cases among Simcoe Muskoka males between 2007 and 2012 was prostate cancer, which accounted for 28 per cent of all cancers over this time period. This was followed by lung cancer and colorectal cancer which each accounted for approximately 13 per cent of all new cancer cases among Simcoe Muskoka males. Together these three cancers accounted for more than half of all new cancer cases among Simcoe Muskoka males.

The leading causes of new cancer cases among Ontario males as a whole over this same time period were quite similar to what was observed in Simcoe Muskoka as depicted in figure one below; however, cancer incidence was significantly higher among Simcoe Muskoka males for: prostate cancer, melanoma of the skin and bladder cancer.

Figure One

160825LCofCancDeathsMalesBAR

Females

The number one cause of new cancer cases among Simcoe Muskoka females between 2007 and 2012 was breast cancer, which accounted for 26 per cent of all cancers over this time period. This was followed by lung cancer and colorectal cancer which accounted for 15 per cent and 12 per cent respectively of all new cancer cases among Simcoe Muskoka females. Together these three cancers accounted for more than half of all new cancer cases among Simcoe Muskoka females.

The leading causes of new cancer cases among Ontario females as a whole over this same time period were quite similar to what was observed in Simcoe Muskoka as depicted in figure two below; however, cancer incidence was significantly higher among Simcoe Muskoka females for: lung cancer, colorectal cancer and melanoma of the skin. The provincial incidence of thyroid cancer among females was significantly higher than the comparable local rate.


Figure Two

160825LCofCancDeathsFemalesBAR

Children and Youth

In Simcoe Muskoka between 2007 and 2012, there were 126 new cases of cancer diagnosed among children and youth under 20 years of age. The leading cause of cancer among Simcoe Muskoka children and youth was leukemia accounting for approximately one-in-five new cancer cases. Cancers of the brain and nervous systems were the second leading cause of cancer among Simcoe Muskoka children and youth, accounting for 15 per cent of all new cancer cases. Non-Hodgkin’s and Hodgins’s Lymphomas accounted for 13 and 10 per cent respectively of all new cancer cases among Simcoe Muskoka children and youth.

Figure three shows the proportion of new cancer cases among children and youth in both Simcoe Muskoka and Ontario as a whole. The leading causes of cancer for this age group are consistent across both Simcoe Muskoka and Ontario as a whole. The local cancer incidence rates for this age group were also not significantly different from the comparable provincial rates for the specified time period.

Figure Three

160803LCofCancChildYouthBAR

Adults

In Simcoe Muskoka between 2007 and 2012, the leading causes of new cancer cases among adults (20 years and older) varied by sex and age group. Among younger adult males between the age of 20 and 44 years, testicular cancer was the leading cause followed by non-Hodgkin’s lymphoma and melanoma of the skin. Among adult males for all other age groups, prostate cancer was the leading cause followed by colorectal and lung cancers. Breast cancer was the leading cause for adult females of all age groups. Among younger adult females between the age of 20 and 44, breast cancer was followed by thyroid and cervical cancers. Among females of all other age groups, breast cancer was followed by lung and colorectal cancers. Table one provides the leading causes of new cancer cases among Simcoe Muskoka adults (20 years and older) for the years of 2007 to 2012 combined, summarized by age group.

Table One

Leading Causes of New Cancer Cases, Simcoe Muskoka Adults, by Sex and Age Group,
2007 to 2012 (combined)

AGE
GROUP

MALES

FEMALES

# New Cancer Cases

Type of Cancer - % of New Cases by Age Group

# New Cancer Cases

Type of Cancer - % of New Cases by Age Group

20-44 years

409

Testis - 17%

Non-Hodgkin Lymphoma - 12%

Melanoma of the Skin - 9%

Thyroid - 8%

Colorectal - 8%

733

Breast - 28%

Thyroid - 18%

Cervix - 9%

Melanoma of the Skin - 8%

Colorectal – 5.5%

45-64 years

3,218

Prostate - 30%

Colorectal - 12%

Lung and Bronchus - 11%

Melanoma of the Skin - 5%

Oral Cavity and Pharynx - 5%

3,189

Breast - 31%

Lung and Bronchus - 13%

Colorectal – 9%

Uterus - 8%

Thyroid - 6%

65-74 years

3,061

Prostate - 33%

Lung and Bronchus - 15%

Colorectal - 14%

Melanoma of the Skin - 4%

Bladder - 4%

2,022

Breast - 26%

Lung and Bronchus - 19%

Colorectal – 12%

Uterus - 6%

Lymphoma - 5%

75+
years

2,829

Prostate - 24%

Lung and Bronchus - 15%

Colorectal - 14%

Melanoma of the Skin - 5%

Lymphoma - 4%

2,495

Breast - 19%

Lung and Bronchus - 18%

Colorectal – 18%

Lymphoma - 4%

Uterus - 4%

 

Data source: CCO SEER*Stat Package Release 10 - OCR (Aug. 2015) . Pop Est Summary (Statistics Canada, Ontario Ministry Finance), Ontario Ministry of Health and Long-Term Care: IntelliHEALTH ONTARIO, extracted May 2015.