DefinitionLiver and intrahepatic bile duct cancer incidence refers to the number of persons newly diagnosed with liver and intrahepatic bile duct cancer during a specified time period. Measures include 1) the number of newly diagnosed cases of the liver and intrahepatic bile duct cancer; and 2) age-adjusted incidence rate of the liver and intrahepatic bile duct cancer (adjusted by the direct method to the 2000 US standard population. All rates are expressed per 100,000 persons. Measures are provided by sex and race/ethnicity.
NumeratorThe number of liver and intrahepatic bile duct cancer cases newly diagnosed in New Mexico residents within a specified time period. The data are based on the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) program incidence site recode for liver cancer (SEER Recode B 21071, 21072); ICD-O-3 codes: primary sites C220, C221; excludes histologies: 9590-9989, and 9140; Malignant cases: ICD behavior code 3.
DenominatorThe estimated population of New Mexico residents within a specified time period.
Why Is This Important?Primary liver cancer (cancer that starts in the liver) accounts for over 2% of all new cancer cases and nearly 5% of all cancer deaths in the U.S, which represents 39,000 cases and 27,000 deaths. The five-year survival rate is 18%. New Mexico has averaged about 242 new cases of bladder cancer each year between 2010 and 2015. Since 1990, age-adjusted rates of bladder cancer in New Mexico have increased by 2.5-times, which is consistent with national trends.
Disease risk among males is 3-4 times higher than that in females, reflecting a gender difference in risk factors that include alcohol abuse, chronic infection with hepatitis B virus (HBV) or hepatitis C virus (HCV), exposure to aflatoxin, and obesity. HBV and HCV can be spread from person to person through sharing contaminated needles (such as in drug use) or unprotected sex. Given these major risk factors, many cases of liver cancer are considered to be preventable.
Other ObjectivesCDC Environmental Public Health Tracking, Nationally Consistent Data and Measures (EPHT NCDM)