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Vol. 28. Issue 6.
Pages 432-436 (January 2004)
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Vol. 28. Issue 6.
Pages 432-436 (January 2004)
Incidencia y significación de la “proliferación acinar atípica” en las biopsias transrectales de próstata
Incidence and significance of “atypical acinar proliferation” in transrectal prostatic biopsies
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F. Herranz Amo1, F. Verdú Tartajo, J.M. Díez Cordero, D. Subirá Ríos, I. Castaño González, M. Moralejo Gárate, J.I. Martínez Salamanca, R. Cabello Benavente
Servicio de Urología. Hospital General Universitario Gregorio Marañón. Madrid
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Resumen

Incidencia y significación de la “proliferación acinar atípica” en las biopsias transrectales de próstata

Objetivo

Evaluar la incidencia de atipia acinar en nuestra serie, el porcentaje de cáncer de próstata y otras lesiones sospechosas o preneoplásicas en las biopsias sucesivas y establecer una estrategia de seguimiento en estos pacientes.

Material y Método

Se han extraído de nuestra base de datos 117 pacientes con el diagnóstico de atipia acinar aislada o asociada a PIN de alto grado, 75 (64%) fueron sometidos al menos a una segunda biopsia de la glándula. La edad, PSA, tacto rectal, volumen prostático, nódulo ecográfico y diagnóstico patológico previo se compararon con el resultado patológico de las sucesivas biopsias de la glándula.

Resultados

La incidencia de atipia acinar fue del 4%. El 46,7% de los pacientes sometidos a rebiopsia presentaron cáncer de próstata. No encontramos diferencias significativas en las variables clínicas analizadas entre los pacientes con diagnóstico final de cáncer o no. Los pacientes con diagnóstico inicial de atipia acinar con PIN de alto grado asociado presentaron una mayor incidencia de cáncer en la rebiopsia que los pacientes con atipia acinar aislada (p=0,007). El 94,3% de las neoplasias diagnosticadas se detectaron en la 2ª y 3ª biopsia.

Conclusiones

Los pacientes con atipia acinar tienen un riesgo elevado de tener un cáncer de próstata no detectado en la 1ª biopsia, por lo tanto deben de ser sometidos a rebiopsia en el menor plazo posible. La probabilidad de diagnosticar un cáncer después de una 3ª biopsia es muy pequeña.

Palabras clave:
Atipia acinar
ASAP
Cáncer de próstata
Neoplasia prostática intraepitelial
Abstract

Incidence and significance of “atypical acinar proliferation” in transrectal prostatic biopsies

Objective

To determine the incidence of atypical acini in our series, the percentage of prostate cancer and other suspicious or preneoplastic lesions in the successive biopsies and to establish a follow up strategy in these patients.

Material And Method

A total of 117 patients diagnosed with isolated atypical acini or associated with high grade PIN were obtained from our database, 75 (64%) of these were submitted to at least a second biopsy of the gland. The age, PSA, digital rectal examination (DRE), prostate volume, ultrasound nodule and previous pathological diagnosis were compared with the pathology results of the successive biopsies of the gland.

Results

Incidence of atypical acini was 4%. A total of 46.7% of patients undergoing a repeat biopsy presented prostate cancer. We did not find significant differences in the clinical variables studied between patients with or without a definite cancer diagnosis. Patients initially diagnosed with acinar atypia with associated high grade PIN presented a higher incidence of cancer in the repeat biopsy than patients with isolated acinar atypia (p=0.007). A total of 94.3% of all neoplasms diagnosed were detected in the 2nd and 3rd biopsy.

Conclusions

Patients with atypical acini are at high risk of having prostate cancer not detected in the first biopsy. They should, therefore, undergo a second biopsy as soon as possible. There is only a very small probability of detecting cancer after the 3rd biopsy.

Key words:
Atypical acini
ASAP
Prostate cancer
Intra-epithelial bladder neoplasm

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