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Observational Study
. 2025;85(6):1240-1250.

Comparing [18F]-PSMA-1007, [18F]-choline positron emission tomography, computerized tomography and bone scintigraphy in prostate cancer recurrence

Affiliations
  • PMID: 41313098
Free article
Observational Study

Comparing [18F]-PSMA-1007, [18F]-choline positron emission tomography, computerized tomography and bone scintigraphy in prostate cancer recurrence

Miguel Angel Bergero et al. Medicina (B Aires). 2025.
Free article

Abstract

Introduction: Prostate cancer (PC) remains a significant public health concern in developed countries. Following initial treatment, patients may experience biochemical recurrence of prostate cancer (BRPC), defined by an increase in prostate-specific antigen (PSA) levels. [18F]-PSMA positron emission tomography (PET) has shown greater accuracy in detecting clinical prostate cancer recurrence (CPCR), however most evidence comes from retrospective case series with limited prospective studies comparing this novel molecule to conventional diagnostic methods in developed countries.

Materials and methods: A prospective observational, descriptive, analytical study of concordance analysis between imaging methods was conducted on a sample of patients with BRPC following curative or first-line treatment.

Results: Seventy-seven patients with BRPC were analyzed. Imaging studies revealed positive results in 6% of computerized tomographies (CT), 12% of bone scintigraphies (BS), 35% of [18F] choline PET scans, and notably in 84% of [18F] PSMA 1007 PET scans (X2 = 22.7, DF = 3; p <0.0001). A significant relationship was observed between the positivity of [18F] PSMA 1007 PET/CT and increasing PSA levels, reaching 100% with PSA ≥ 2 ng/mL.

Discussion: [18F] PSMA 1007 PET demonstrated high efficacy in localizing recurrent PC in BRPC patients compared to CT, BS, and [18F] choline PET, allowing for better restaging of patients with BRPC compared to CT, BS, and [18F] choline PET.

Introducción: El cáncer de próstata (CP) sigue siendo un importante problema de salud pública en los países desarrollados. Tras el tratamiento inicial, los pacientes pueden experimentar una recurrencia bioquímica del cáncer de próstata (RBCP) La tomografía por emisión de positrones (PET) con [18F]-PSMA ha demostrado una mayor precisión en la detección de la recurrencia del cáncer de próstata; sin embargo, la mayoría de las evidencias provienen de series de casos retrospectivos, y los estudios prospectivos son limitados. Materiales y métodos: Se realizó un estudio prospectivo, observacional, descriptivo y analítico de análisis de concordancia entre métodos de imagen en una muestra de pacientes con RBCP tras tratamiento curativo o de primera línea. Resultados: Se analizaron 77 pacientes con RBCP. Los estudios de imagen revelaron resultados positivos en un 6% de las tomografías computarizadas (TC), un 12% de los centellogramas óseos (CO), un 35% de los PET con [18F] colina y, notablemente, en un 84% de los PET con [18F] PSMA 1007 (X2 = 22.7; DF = 3; p <0.0001). Se observó una relación significativa entre la positividad del PET con [18F] PSMA 1007 y los niveles crecientes de PSA, alcanzando un 100% en pacientes con PSA ≥ 2 ng/mL. Discusión: El PET con [18F] PSMA 1007 demostró una alta eficacia en la localización del CP recurrente en pacientes con RBCP, en comparación con la TC, la CO y el PET con [18F] colina, permitiendo una mejor reestadificación de los pacientes con RBCP en comparación con los métodos convencionales.

Keywords: PET-CT; prostate cancer; prostate-specific antigen.

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