Exam 3: Cancer Screening Flashcards
What are some of the requirements for a screening procedure to be useful?
High sensitivity and specificity
Have low Risk
Cheap
Acceptable/comfortable to public
What is the screening procedure for Colon Cancer?
Colonoscopy : Fiber Optic Tube is used to see the inside of the colon and can remove any polyps
What are some disadvantages of the Colon Cancer Screening procedure?
- Patients are uncomfortable with the procedure, both the prep and the procedure itself
- Patients can have bleeding
What I the Screening procedure for Breast Cancer?
Mammogram
What are the disadvantages of Mammograms?
They miss tumors
Have a high false positive rate
Reducing mortality is still debatable
What is the Screening procedure for Prostate Cancer?
PSA Blood Test
What are the Disadvantages of the PSA Blood Test?
High false positive rate
Led to cancer over diagnosis
What is a false Negative?
Failure to detect cancer in a patient who actually has cancer
What is a false positive?
Detecting cancer in a patent who does not have it
Refers to the chance that a patient with cancer will correctly test positive?
Sensitivity
Refers to the chance that a patient without cancer will correctly test negative?
Specificity
Why is over diagnosis a problem?
Additional follow up procedures
High Cost
Patients have added stress and anxiety for no reason
What cancers are there screening procedures for?
Cervical , prostate, colon ,and breast cancer
