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Akcay K, Kibar A, Sahin OE, Demirbilek M, Beydagi G, Asa S, Aghazada F, Toklu T, Selcuk NA, Onal B, Kabasakal L. Prediction of clinically significant prostate cancer by [ 68 Ga]Ga-PSMA-11 PET/CT: a potential tool for selecting patients for active surveillance. Eur J Nucl Med Mol Imaging 2024; 51:1467-1475. [PMID: 38112777 DOI: 10.1007/s00259-023-06556-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 11/30/2023] [Indexed: 12/21/2023]
Abstract
PURPOSE In our study, our aim was to investigate the role of [68 Ga]Ga-PSMA-11 PET /CT imaging in the diagnosis of clinically significant prostate cancer (csPCa) (ISUP GG 2 and higher) in patients initially diagnosed with ISUP GG 1 and 2 after prostate biopsy. MATERIALS AND METHODS We retrospectively reviewed 147 patient records in whom [68 Ga]Ga-PSMA-11 PET/CT imaging was performed preoperatively. All patients were initially diagnosed with ISUP GG 1 and 2 PCa by biopsy. Final pathology reports were obtained after radical prostatectomy. The [68 Ga]Ga-PSMA-11 PET/CT images were evaluated to determine the PRIMARY score. Patients' mpMRI-PIRADS scores were also recorded when available and analyzed in correlation with the pathology results. RESULTS For the 114 patients scored using PRIMARY, 19 out of 37 patients with scores of 1 and 2 (51%) were diagnosed with csPCa. Of the 77 patients with PRIMARY scores between 3 and 5, 64 (83%) had csPCa. Notably, every patient with a PRIMARY score of 5 had csPCa. PRIMARY scoring had a sensitivity of 77% and specificity of 58%, with a positive predictive value of 83%. A moderate correlation was observed between PRIMARY scores and ISUP GG (Rho = 0.54, p < 0.001). In contrast, the PIRADS score displayed a sensitivity and specificity of 86% and 25% respectively, with a positive predictive value of 68%. No substantial correlation was found between PIRADS and ISUP GG. Statistical analysis revealed a significant correlation between PRIMARY and ISUP GG (p < 0.001), but not between PIRADS and ISUP GG (p = 0.281). Comparatively, PRIMARY scoring was significantly more reliable than PIRADS scoring in identifying csPCa. CONCLUSION [68 Ga]Ga-PSMA-11 PET/CT imaging is promising for distinguishing high-risk prostate cancer patients from those apt for active surveillance, potentially aiding in the identification of csPCa.
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Affiliation(s)
- Kaan Akcay
- Department of Nuclear Medicine, Yeditepe University Medical Faculty, Koşuyolu Mah. Koşuyolu Cad. No: 168, 34718, Kadıköy/Istanbul, Turkey
| | - Ali Kibar
- Department of Nuclear Medicine, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Fatih, Istanbul, 34098, Turkey
| | - Onur Erdem Sahin
- Department of Nuclear Medicine, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Fatih, Istanbul, 34098, Turkey
| | - Muhammet Demirbilek
- Department of Urology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Fatih, Istanbul, 34098, Turkey
| | - Gamze Beydagi
- Department of Nuclear Medicine, Yeditepe University Medical Faculty, Koşuyolu Mah. Koşuyolu Cad. No: 168, 34718, Kadıköy/Istanbul, Turkey
| | - Sertac Asa
- Department of Nuclear Medicine, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Fatih, Istanbul, 34098, Turkey
| | - Fuad Aghazada
- Department of Nuclear Medicine, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Fatih, Istanbul, 34098, Turkey
| | - Turkay Toklu
- Department of Nuclear Medicine, Yeditepe University Medical Faculty, Koşuyolu Mah. Koşuyolu Cad. No: 168, 34718, Kadıköy/Istanbul, Turkey
| | - Nalan Alan Selcuk
- Department of Nuclear Medicine, Yeditepe University Medical Faculty, Koşuyolu Mah. Koşuyolu Cad. No: 168, 34718, Kadıköy/Istanbul, Turkey
| | - Bulent Onal
- Department of Urology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Fatih, Istanbul, 34098, Turkey
| | - Levent Kabasakal
- Department of Nuclear Medicine, Yeditepe University Medical Faculty, Koşuyolu Mah. Koşuyolu Cad. No: 168, 34718, Kadıköy/Istanbul, Turkey.
- Department of Nuclear Medicine, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Fatih, Istanbul, 34098, Turkey.
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