Neoplasia: Definition, Classification, Diagnosis
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Questions and Answers

What percentage of patients undergoing prostate cancer screening with the PSA test had at least one false positive result?

  • 25-30% (correct)
  • 50-60%
  • 5-10%
  • 70-90%

    • What is a limitation of the PSA test for prostate cancer screening?

  • It requires a surgical procedure to obtain a sample.
  • It has a low sensitivity for detecting early-stage prostate cancer.
  • It cannot distinguish between benign prostatic hyperplasia and prostate cancer. (correct)
  • It has a high rate of false negatives.

    • What is a potential issue with repetitive screening tests like the PSA test?

  • The test becomes less accurate over time.
  • The test requires more invasive procedures with each subsequent test.
  • The false positive rate increases with each subsequent test. (correct)
  • The false negative rate increases with each subsequent test.

    • What percentage of patients undergoing lung cancer screening with CT scans had at least one false positive result?

    <p>70-90%</p> Signup and view all the answers

    What is the difference between grading and staging in cancer?

    <p>Grading refers to the tumor's differentiation, while staging refers to the extent of its spread.</p> Signup and view all the answers

    What is the purpose of the TNM staging system in cancer?

    <p>To evaluate the extent of the tumor's spread.</p> Signup and view all the answers

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