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Cancer Screenings: Understanding the Pros and Cons

When it comes to your health, what you don’t know can hurt you. That’s why healthcare providers recommend cancer screenings. These tests look for signs of cancer before you have any symptoms. Cancer screenings can be powerful tools that can help find the disease at an early stage, when it may be easier to treat. Most of the time screenings do not diagnose cancer. Instead, they help your healthcare provider see if you need more tests. For example, a mammogram may find a breast lump, but a lump doesn’t always mean you have breast cancer. You would need a biopsy or another diagnostic test to find out if the lump is cancerous.

What kinds of cancer screenings are available?

When it comes to screening tests, there are many different kinds available. Cancer screening tests can include:

Physical exams that check for signs of disease, like lumps or anything out of the ordinary.

Lab tests, such as tissue, urine, and blood samples, or genetic tests that look for changes in your genes that are linked to certain types of cancer.

Imaging procedures, such as mammograms, which take pictures of the inside of your body.

Research studies have shown that some screening tests are accurate and useful. These screening tools then become standard tests, such as mammograms for breast cancer, Pap smears for cervical cancer, and visual inspection screening for oral cancer. Your healthcare provider may suggest other screenings for colon cancer, lung, ovarian, prostate and skin cancer. These tests may be beneficial, especially for people who have an increased risk for that specific cancer type. However, this is not a complete list of all available screenings. It is important to talk with your healthcare provider to decide which ones are recommended for you. Although some tests have not shown to reduce the risk of death from cancer, they may still be able to detect cancer early on.

What are the risks of cancer screenings?
Although cancer screenings have many benefits, you should also be aware of their potential risks:

False-positive test results are possible

Test results can sometimes indicate that something’s wrong, even if your body is cancer-free. A false positive can lead to more tests—with more potential risks—as well as needless anxiety.

False-negative test results can happen

Test results may be normal even though you have cancer. False-negative results could keep you from talking with your healthcare provider because you think everything is OK.

Understanding the potential risks of any screening test that you’re considering is important. Ask your healthcare provider to help you weigh those risks against the benefits.

Which cancer screenings do I need?

Which screenings should you consider? That depends on several factors, such as your age, gender, and risk factors for certain cancers. To learn which screenings may be best for you, speak with your healthcare provider.[1] [2] [3]

Issued in Public Interest

1.    Rajaraman P, Anderson BO, Basu P, Belinson JL, Cruz AD, Dhillon PK, Gupta P, Jawahar TS, Joshi N, Kailash U, Kapambwe S, Katoch VM, Krishnan S, Panda D, Sankaranarayanan R, Selvam JM, Shah KV, Shastri S, Shridhar K, Siddiqi M, Sivaram S, Seth T, Srivastava A, Trimble E, Mehrotra R. Recommendations for screening and early detection of common cancers in India. Lancet Oncol. 2015 Jul;16(7):e352-61. doi: 10.1016/S1470-2045(15)00078-9. PMID: 26149887.
2.    National Cancer Grid: Resource Stratified Guidelines_2019/Preventive Oncology; Consensus Evidence Based Resource Stratified Guidelines on Secondary prevention of Cervical , Breast & Oral Cancers Accessed August 4, 2022
3.    National Institutes of Health. National Cancer Institute. Cancer Screening Overview (PDQ®)–Patient Version. Accessed June 28, 2018

Disclaimer: The content herein is meant for informational and awareness purposes only. It should not be considered as a substitute for competent medical advice. Please consult a healthcare professional for further information.

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