» Articles » PMID: 27565154

Recurrent Bladder Carcinoma: Clinical and Prognostic Role of 18 F-FDG PET/CT

Overview
Date 2016 Aug 28
PMID 27565154
Citations 17
Authors
Affiliations
Soon will be listed here.
Abstract

Aim: A small number of studies evaluated the detection rate of lesions from bladder carcinoma (BC) of 18 F-FDG PET/CT in the restaging process. However, the prognostic role of FDG PET/CT still remains unclear. The aim of the present study was to evaluate the accuracy, the effect upon treatment decision, and the prognostic value of FDG PET/CT in patients with suspected recurrent BC.

Materials And Methods: Forty-one patients affected by BC underwent FDG PET/CT for restaging purpose. The diagnostic accuracy of visually interpreted FDG PET/CT was assessed compared to histology (n = 8), other diagnostic imaging modalities (contrast-enhanced CT in 38/41 patients and MRI in 15/41) and clinical follow-up (n = 41). Semiquantitative PET values (SUVmax, SUVmean, SUL, MTV, TLG) were calculated using a graph-based method. Progression-free survival (PFS) and overall survival (OS) were assessed by using Kaplan-Meier curves. The risk of progression (hazard ratio, HR) was computed by Cox regression analysis by considering all the available variables.

Results: PET was considered positive in 21 of 41 patients. Of these, recurrent BC was confirmed in 20 (95 %). Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of FDG PET/CT were 87 %, 94 %, 95 %, 85 %, 90 %. AUC was 0.9 (95 %IC 0.8-1). Bayesian positive and negative likelihood ratios were 14.5 and 0.13, respectively. FDG PET/CT findings modified the therapeutic approach in 16 patients (modified therapy in 10 PET-positive patients, watch-and-wait in six PET-negative patients). PFS was significantly longer in patients with negative scan vs. those with pathological findings (85 % vs. 24 %, p < 0.05; HR = 12.4; p = 0.001). Moreover, an unremarkable study was associated with a longer OS (88 % vs. 47 % after 2 years and 87 % vs. 25 % after 3 years, respectively, p < 0.05). Standardized uptake value (SUV)max > 6 and total lesion glycolysis (TLG) > 8.5 were recognized as the most accurate thresholds to predict PFS (2-year PFS 62 % for SUVmax < 6 vs. 15 % for SUVmax > 6, p = 0.018; 2-year PFS 66 % for TLG < 8.5 vs. 18 % for TLG > 8.5, p = 0.09).

Conclusion: A very good diagnostic performance for FDG PET/CT was confirmed in patients with suspected recurrent BC. FDG PET/CT allowed for a change in treatment decision in about 40 % of cases and showed an important prognostic value in assessing PFS and OS.

Citing Articles

Nuclear Medicine and Molecular Imaging in Urothelial Cancer: Current Status and Future Directions.

McDonald S, Keane K, Gauci R, Hayne D Cancers (Basel). 2025; 17(2).

PMID: 39858014 PMC: 11763387. DOI: 10.3390/cancers17020232.


Assessing the Performance of 18F-FDG PET/CT in Bladder Cancer: A Narrative Review of Current Evidence.

Bacchiani M, Salamone V, Massaro E, Sandulli A, Mariottini R, Cadenar A Cancers (Basel). 2023; 15(11).

PMID: 37296913 PMC: 10252107. DOI: 10.3390/cancers15112951.


PET Imaging in Bladder Cancer: An Update and Future Direction.

Zhang-Yin J, Girard A, Marchal E, Lebret T, Homo Seban M, Uhl M Pharmaceuticals (Basel). 2023; 16(4).

PMID: 37111363 PMC: 10144644. DOI: 10.3390/ph16040606.


Mycoplasma infection mimicking a malignancy in a waldenstrom macroglobulinemia patient.

Wu J, He D, Yu F, Huang Y, Bian M, Yu C BMC Infect Dis. 2023; 23(1):219.

PMID: 37029352 PMC: 10080790. DOI: 10.1186/s12879-023-08163-6.


Predicting Recurrence of Non-Muscle-Invasive Bladder Cancer: Current Techniques and Future Trends.

Shalata A, Shehata M, van Bogaert E, Ali K, Alksas A, Mahmoud A Cancers (Basel). 2022; 14(20).

PMID: 36291803 PMC: 9599984. DOI: 10.3390/cancers14205019.


References
1.
Barentsz J, Engelbrecht M, Witjes J, de la Rosette J, van der Graaf M . MR imaging of the male pelvis. Eur Radiol. 1999; 9(9):1722-36. DOI: 10.1007/s003300050916. View

2.
Ploeg M, Aben K, Kiemeney L . The present and future burden of urinary bladder cancer in the world. World J Urol. 2009; 27(3):289-93. PMC: 2694323. DOI: 10.1007/s00345-009-0383-3. View

3.
Apolo A, Riches J, Schoder H, Akin O, Trout A, Milowsky M . Clinical value of fluorine-18 2-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography in bladder cancer. J Clin Oncol. 2010; 28(25):3973-8. PMC: 2940395. DOI: 10.1200/JCO.2010.28.7052. View

4.
Babjuk M, Burger M, Zigeuner R, Shariat S, van Rhijn B, Comperat E . EAU guidelines on non-muscle-invasive urothelial carcinoma of the bladder: update 2013. Eur Urol. 2013; 64(4):639-53. DOI: 10.1016/j.eururo.2013.06.003. View

5.
Kosuda S, Kison P, Greenough R, Grossman H, Wahl R . Preliminary assessment of fluorine-18 fluorodeoxyglucose positron emission tomography in patients with bladder cancer. Eur J Nucl Med. 1997; 24(6):615-20. DOI: 10.1007/BF00841398. View