A patient, age 56, has been advised that his prostate-specific antigen (PSA) level is elevated. The physician then performed a digital rectal examination (DRE). What should the next definitive diagnostic test be?
a. CA-125 test
b. Transrectal ultrasound
c. Needle biopsy of the prostate
d. MRI
ANS: B
Men over the age of 50 should be advised to have a prostate-specific antigen (PSA) test and rectal examination once a year. Two other screening methodsâ€"DRE and transrectal ultrasonography (TRUS)â€"are used alone and in combination in the early detection of prostate cancer.
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