They are not the same. A step sister is a sister by marriage. That is her mother or father married your mother or father, so she is not a sister by blood. A half sister has a mother or father in common with you but not both parents as that would be a full sister.
Checking for cancer (or for conditions that may become cancer) in people who have no symptoms is called screening. Screening can help doctors find and treat several types of cancer early. Early detection is important because when abnormal tissue or cancer is found early, it may be easier to treat.By the time symptoms appear, cancer may have begun to spread and is harder to treat. Several screening tests have been shown to detect cancer early and to reduce the chance of dying from that cancer.ut it is important to keep in mind that screening tests can have potential harms as well as benefits. 1  Some screening tests may cause bleeding or other health problems. 2  Screening tests can have false-positive resultsâthe test indicates that cancer may be present even though it is not. 3  Screening tests can have false-negative resultsâthe test 4  ... Ove
Screening means checking your body for cancer before you have symptoms. Getting screening tests regularly may find breast, cervical, and colorectal (colon) cancers early, when treatment is likely to work best.Lung cancer screening is recommended for some people who are at high risk.creening means checking your body for cancer before you have symptoms. Getting screening tests regularly may find breast, cervical, and colorectal (colon) cancers early, when treatment is likely to work best. Lung cancer screening is recommended for some people who are at high risk.