Resumen

MARANGONI, Alberto et al. Utility of Free/Total Serum Prostate-Specific Antigen Ratio in prostatic cancer studied with endorectal ultrasound biopsy. Rev. argent. radiol. [online]. 2008, vol.72, n.3, pp.287-292. ISSN 1852-9992.

Introduction: The tumor markers are important to decide to perform biopsies in the prostate cancer diagnosis. The goal of this article is to evaluate the diagnosis precision of FPSA (Free Prostatic Specific Antigen) as a tumor marker in patients with Prostatic Cancer suspicion and the FPSA ratio. Material and Method: A total of 248 patients aged between 38 and 88 years old were evaluated from November 2001 to June 2007. It was a prospective study analyzing the FPSA, the presence of echographic hypoecogenic lesion and the anatomopathologic final diagnosis to confirm either malignancy or benignity. Results: The selection of patients to perform Prostatic Endorectal Biopsy (PEB) is a diary dilemma in Urology cabinets. Since PEB is an invasive procedure it is necessary to adjust its indications. Until now the parameters that Urologists are using to indicate the biopsy are: Serum PSA, Clinics findings, and the Endorectal Ultrasound findings (EU). The ratio FPSA/Serum PSA must be considered with more emphasis. Conclusion: The identification of FPSA ratio alteration with a more confidential cut level adjusted to 0.14 can be more sensitive in the prostate cancer diagnosis and for the selection of patients to perform biopsies or avoid unnecessary invasive procedures.

Palabras clave : Prostatic Cancer; Free PSA; Endorectal Prostatic Biopsy.

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