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Letters |15 June 1994

Utility of the Prostate-specific Antigen Test

Arthur P. Wolinsky, MD

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Author, Article, and Disclosure Information
  • Pittsburgh, PA 15212
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TO THE EDITOR:
Walsh [1] describes two populations in which the prostate-specific antigen (PSA) test is used: an asymptomatic group, in which use of the test constitutes screening, and a symptomatic group, in which use of the test constitutes diagnosis. He appropriately points out that the PSA test is likely to have a different yield in patients with complaints due to prostatic enlargement than in asymptomatic persons. Patients with symptoms, however, can present in one of two ways and, by so doing, place themselves into one of two groups: a case-finding group or a diagnosis group. Case finding [2] describes a patient who goes to the physician for one reason (for example, for evaluation of headaches) and on review of systems responds positively to questions designed to elicit evidence of a different problem (for example, urinary obstruction). Diagnosis describes the evaluation of the primary problem (for example, difficulty in urinating). Dr. Walsh does not mention a case-finding group in his analysis.
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Wolinsky AP. Utility of the Prostate-specific Antigen Test. Ann Intern Med. ;120:1053–1054. doi: 10.7326/0003-4819-120-12-199406150-00031

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Published: Ann Intern Med. 1994;120(12):1053-1054.

DOI: 10.7326/0003-4819-120-12-199406150-00031

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