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Inicio Revista Española de Medicina Nuclear e Imagen Molecular (English Edition) Detection of second tumors in 11C-choline PET/CT studies performed due to bioche...
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Vol. 33. Issue 1.
Pages 28-31 (January - February 2014)
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Vol. 33. Issue 1.
Pages 28-31 (January - February 2014)
Clinical note
Detection of second tumors in 11C-choline PET/CT studies performed due to biochemical recurrence of prostate cancer
Detección de segundos tumores en estudios de la PET/TC con 11C-colina realizados por recurrencia bioquímica de cáncer de próstata
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J.R. García
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jrgarcia@cetir.es

Corresponding author.
, A. Ponce, M. Canales, J. Ayuso, M. Moragas, M. Soler
Unitat PET, CETIR, Esplugues de Llobregat, Barcelona, Spain
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Abstract

Early localization of biochemical recurrence in patients after radical treatment of prostate cancer is a widely accepted clinical indication of 11C-choline PET/CT. Its widespread clinical use has prompted the depiction of incidentalomas, unusual sites of metastatic lesions, as well as false positive and negative cases. Over the last 6 years, a total of 454 11C-choline PET/CT studies have been performed in our institution to locate biochemical recurrence of patients with prostate cancer. With these studies, a second neoplasm has been found in 7 patients (1.54%): 3 lung, 2 colorectal, 1 esophagus and 1 esophageal junction, respectively. Although the clinical usefulness of this technique for detecting cancer lesions other than prostate origin is known for those patients who undergo this technique in the accepted indication, the diagnosis of a second tumor has a significant impact on their therapeutic management.

Keywords:
11C-choline positron emission tomography/computed tomography
Incidentaloma
Prostate cancer
Resumen

La aplicación clínica más aceptada de la PET/TC con 11C-colina es la localización precoz de la recidiva bioquímica en pacientes tras un tratamiento radical de cáncer de próstata. Su uso generalizado ha hecho evidente la existencia de localizaciones infrecuentes de incidentalomas, lesiones metastásicas, así como falsos positivos y negativos en la exploración. En los últimos 6 años, de un total de 454 estudios de la PET/TC con 11C-colina realizados en nuestro servicio para localizar la recidiva bioquímica de un cáncer de próstata hemos detectado un segundo tumor en 7 casos (1,54%): 3 de pulmón, 2 colorrectales, uno de esófago y uno esofagogástrico. Si bien es conocida la utilidad de la PET/TC con 11C-colina en la detección de otros tipos de tumores diferentes al cáncer de próstata, en los pacientes en los que se realiza la exploración por esta indicación aceptada su diagnóstico muestra un importante cambio en el manejo terapéutico de estos pacientes.

Palabras clave:
Tomografía por emisión de positrones/tomografía computarizada con 11C-colina
Incidentaloma
Cáncer de próstata

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