Prostate specific antigen

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In medicine, prostate specific antigen (PSA) is a "glycoprotein that is a kallikrein-like serine proteinase and an esterase, produced by epithelial cells of both normal and malignant prostate tissue. It is an important marker for the diagnosis of prostate cancer."[1]

Abnormal PSA results may revert to normal, although the meaning of this reversion is not clear.[2][3]

References

  1. ↑ Anonymous, (2009) Prostate specific antigen (English). Medical Subject Headings. U.S. National Library of Medicine.
  2. ↑ Ankerst DP, Miyamoto R, Nair PV, Pollock BH, Thompson IM, Parekh DJ (May 2009). Yearly prostate specific antigen and digital rectal examination fluctuations in a screened population. J. Urol. 181 (5): 2071–5; discussion 2076. DOI:10.1016/j.juro.2009.01.029. PMID 19286205.
  3. ↑ Eastham JA, Riedel E, Scardino PT, et al. (May 2003). Variation of serum prostate-specific antigen levels: an evaluation of year-to-year fluctuations. JAMA 289 (20): 2695–700. DOI:10.1001/jama.289.20.2695. PMID 12771116.
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