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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Serum PSA adjusted for volume of transition zone (PSAT) is more accurate than PSA adjusted for total gland volume (PSAD) in detecting adenocarcinoma of the prostate.

OBJECTIVE. This study evaluates the accuracy of comparing serum prostate-specific ( PSA) levels in the range between 4.1 ng/mL and 10.0 ng/mL (monoclonal) to the volume of the transition zone (TZ) of the prostate and total gland volume as a predictor of a positive biopsy. METHODS. Using sonographic voluming of the entire prostate and of the TZ, prostate-specific antigen density (PSAD) and prostate-specific antigen density of the TZ (PSAT) were calculated in 21 biopsy-positive patients and 38 biopsy-negative patients. Biopsy was directed at sonographically suspicious areas and did not include sextant biopsies. RESULTS. A statistically significant association was determined between a positive biopsy and gland volume, TZ volume, and PSAT. The association of a positive biopsy with PSA and PSAD was not statistically significant. CONCLUSIONS. PSAT is more accurate in predicting a positive biopsy than is PSAD for PSA levels between 4.1 ng/mL and 10.0 ng/mL.[1]

References

  1. Serum PSA adjusted for volume of transition zone (PSAT) is more accurate than PSA adjusted for total gland volume (PSAD) in detecting adenocarcinoma of the prostate. Kalish, J., Cooner, W.H., Graham, S.D. Urology (1994) [Pubmed]
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