A 70yearold man underwent transurethral resection of the pro

A 70-year-old man underwent transurethral resection of the prostate to remove a carcinoma. PSA values were measured pre and post-operatively. PSA Tumor Marker Results Pre-Op 90 Post-Op Week 1 50 Week 2 30 Week 3 25 1. What does the elevated PSA value indicate? 2. Why does it fall? 3. If plasma PSA has a half-life of 3.5 days can you comment on the completeness of the surgical resection? (Hint: You will need to do the math) 4. Would you expect for the PSA results at one year post-op?

Solution

Normal PSA value are generally.

In our case value of was very high around 90 due to prostate cancer