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Vol. 36. Issue 4.
Pages 234-238 (April 2012)
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Vol. 36. Issue 4.
Pages 234-238 (April 2012)
Original article
Does antibiotherapy prevent unnecessary prostate biopsies in patients with high PSA values?
¿Evita la antibioterapia biopsias de próstata en pacientes con valores elevados de PSA?
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G. Faydacia, B. Eryildirima,
Corresponding author
bilaleryildirim@yahoo.com

Corresponding author.
, F. Tarhana, C. Goktasa, C. Tosuna, U. Kuyumcuoglub
a Lütfi Kirdar Training and Research Hospital Urology Clinic, Estambul, Turkey
b Trakya University Faculty of Medicine, Urology Clinic, Edirne, Turkey
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Tables (5)
Table 1. Age, IPSS, NIH-CPSI, PV, PMR, and Qmax of the cases according to the clinical diagnosis.
Table 2. Medians and ranges of tPSA, fPSA and fPSA/tPSA change after antibiotherapy.
Table 3. Number of patients before and after antibiotherapy according to their PSA values.
Table 4. Changes in IPSS and NIH-CPSI after antibiotherapy according to the diagnosis.
Table 5. Medians and ranges of changes in tPSA, fPSA and f/tPSA ratio after antibiotherapy in patients with BPH who had inflammation in the pathology especimens and in those who did not.
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Abstract
Introduction

We investigated if antibiotherapy has any role on total prostate specific antigen (tPSA), free prostate specific antigen (fPSA) and fPSA/tPSA ratio in patients with tPSA higher than 2.5ng/ml. We also analyzed if it has any relation with prostate cancer diagnosis rate.

Material and methods

A total of 108 patients older than 50 years of age with lower urinary system symptoms and tPSA>2.5ng/ml were included in this study. Antibiotherapy was given to all the cases for three weeks. After that, transrectal ultrasound-guided prostate biopsies were taken from all the patients. Before and after antibiotherapy, “The International Prostate Symptom Score” (IPSS) and “National Institutes of Health Chronic Prostatitis Symptom Index” (NIH-CPSI) questionnaires are performed and serum tPSA, fPSA and fPSA/tPSA values are obtained.

Results

tPSA, fPSA and fPSA/tPSA ratio alterations prior to and after antibiotherapy did not show any statistically significant difference (p>0.05). When prostate adenocarcinoma was excluded, a statistically significant decrease was found in IPSS and NIH-CPSI scores for all cases.

Conclusions

Antibiotherapy given to patients with prostate specific antigen (PSA) levels higher than threshold value has not led to significant change in prostate needle biopsy decision. Prostate biopsy should be considered without trying antibiotherapy in patients with high PSA values if a suspicion of prostatitis does not exist.

Keywords:
Prostate specific antigen
Antibiotherapy
Prostate biopsy
Resumen
Introducción

Investigamos si la antibioterapia tiene algún papel en el PSA total (tPSA), PSA libre (fPSA) y fPSA/tPSA en pacientes con PSA superior a 2,5ng/ml. También si tiene alguna relación con la tasa de diagnóstico de cáncer de próstata.

Material y métodos

Un total de 108 pacientes mayores de 50 años con síntomas del tracto urinario inferior y PSA>2,5ng/ml fueron incluidos en este estudio. Se dio antibioterapia a todos los casos durante tres semanas. Luego se tomó biopsias con guía ultrasonográfica a todos los pacientes. Antes y después de la antibioterapia se les aplicó los cuestionarios International Prostate Sypmtom Score (IPSS) y National Institute of Health Chronic Prostatitis Symptom Index (NIH-CPSI) y se comparó los valores de tPSA, fPSA y fPSA/tPSA en sangre.

Resultados

Las variaciones de tPSA, fPSA y fPSA/tPSA antes y después de la antibioterapia no mostraron diferencias estadísticamente significativas (p>0,05). Cuando excluimos el adenocar-cinoma de próstata se hallaron diferencias estadísticamente significativas en las puntuaciones del IPSS y NIH-CPSI en todos los casos.

Conclusiones

La administración de antibioterapia a pacientes con niveles de PSA superiores a los valores de corte no produjo un cambio significativo en la decisión de realizar biopsias de próstata con aguja. Se debería considerar realizar biopsias de próstata sin antibioterapia previa en los pacientes con PSA elevado cuando no exista una sospecha de prostatitis.

Palabras clave:
PSA
Antibioterapia
Biopsia de próstata

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