Purpose: The primary aim of this retrospective multicenter analysis was to assess the performance of PSMA PET/CT using [F]DCFPyL in the detection and localization of recurrent prostate cancer post radical prostatectomy (RP). Particular reference is given to low PSA groups < 0.5 ng/mL to aid discussion around the inclusion of this group in PSMA guidelines and funding pathways.
Methods: Retrospective analysis of combined PSMA database patients from centers in Australia and New Zealand. Two hundred twenty-two patients presenting with recurrence post RP were stratified into five PSA groups (ng/mL): 0-0.19, 0.2-0.49, 0.5-0.99, 1-1.99, and ≥ 2. Lesions detected by [F]DCFPyL PET/CT were recorded as local recurrence, locoregional nodes, and metastases.
Results: Of 222 patients, 155 (69.8%) had evidence of abnormal uptake suggestive of recurrent prostate cancer. The detection efficacies for [F]DCFPyL PET/CT were 91.7% (44/48) for PSA levels ≥ 2 ng/mL, 82.1% (23/28) for PSA levels 1-1.99 ng/mL, 62.8% (27/43) for PSA levels 0.5-0.99 ng/mL, 58.7% (54/92) for PSA levels 0.2-0.49 ng/mL, and 63.6% (7/11) for PSA levels ≤ 0.2 ng/mL. In those with PSA < 0.5 ng/mL, 47.6% (49/103) had detectable lesions, 71.4% (35/49) had disease confined to the pelvis, 22.4% (11/49) had prostate bed recurrence, 49.0% (24/49) had pelvic lymph nodes, and 28.6% (14/49) had extra pelvic disease.
Conclusion: [F]DCFPyL PET/CT has a high detection rate in recurrence following RP even at low PSA levels with similar detection levels in the PSA subgroups < 0.5 ng/mL. Employing rigid PSA thresholds when constructing guidelines for PSMA PET/CT funding eligibility may result in a significant number of patients below such thresholds having delayed or inappropriate treatment.
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http://dx.doi.org/10.1007/s00259-020-05143-9 | DOI Listing |
Rev Esp Med Nucl Imagen Mol (Engl Ed)
October 2024
Servicio de Medicina Nuclear, Hospital General Universitario de Ciudad Real, Ciudad Real, Spain.
J Urol
October 2024
Department of Urology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois.
Purpose: There are limited data on PSMA PET/CT for workup of recurrence after radical prostatectomy (RP) at low PSA values. We evaluated a PSMA PET/CT cohort of patients with post-RP, focusing on patients with PSA < 0.5 ng/mL.
View Article and Find Full Text PDFCan Urol Assoc J
October 2024
McMaster University and Juravinski Cancer Centre, Hamilton, ON, Canada.
Introduction: This study aimed to assess the detection rate of prostate cancer recurrence by prostate-specific member antigen positron emission tomography/computed tomography (PSMA PET/CT) with F-DCFPyL in patients with residual disease or biochemical recurrence (BCR), and its association with surgical pathology and prostate-specific antigen (PSA) kinetics.
Methods: Men from South Central Ontario enrolled in the PSMA Registry for Recurrent Prostate cancer (PREP) between April 2019 and December 2021 after radical prostatectomy (RP) and who had 1) pathologic stage N1 or persistent elevated PSA; or 2) BCR (PSA >0.10 ng/mL) where initial postoperative PSA was undetectable were included.
Front Med (Lausanne)
September 2024
Department of Urology Surgery, First Hospital of Jilin University, Changchun, China.
Purpose: To evaluate the diagnostic performance of PSMA PET/CT, including [Ga]Ga-PSMA-11 and [F]DCFPyL, in comparison with the [Tc]Tc-MDP bone scan (BS) in identifying bone metastases among prostate cancer patients.
Methods: A search was performed in the PubMed and Embase databases to locate pertinent publications from inception to February 12, 2024. The studies included were those that examined the diagnostic effectiveness of PSMA PET/CT (covering [Ga]Ga-PSMA-11 and [F]DCFPyL) compared to [Tc]Tc-MDP BS in identifying bone metastases among prostate cancer patients.
J Nucl Med
November 2024
Division of Urology, Department of Surgical Oncology, Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada.
In Canada and across the globe, access to PSMA PET/CT is limited and expensive. For patients with biochemical recurrence (BCR) after treatment for prostate cancer, novel strategies are needed to better stratify patients who may or may not benefit from a PSMA PET scan. The role of the free-to-total prostate-specific antigen (PSA) ratio (FPSAR) in posttreatment prostate cancer, specifically in the PSMA PET/CT era, remains unknown.
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