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Tumor Lesion Diameter on Diffusion Weighted Magnetic Resonance Imaging Could Help Predict Insignificant Prostate Cancer in Patients Eligible for Active Surveillance: Preliminary Analysis

 Dong Hoon Lee  ;  Kyo Chul Koo  ;  Seung Hwan Lee  ;  Koon Ho Rha  ;  Young Deuk Choi  ;  Sung Joon Hong  ;  Byung Ha Chung 
 JOURNAL OF UROLOGY, Vol.190(4) : 1213-1217, 2013 
Journal Title
Issue Date
Diffusion Magnetic Resonance Imaging* ; Humans ; Male ; Middle Aged ; Patient Selection* ; Predictive Value of Tests ; Prostatic Neoplasms/pathology* ; Retrospective Studies ; Tumor Burden ; Watchful Waiting*
ADC ; AS ; DW-MRI ; ECE ; MRI ; PRIAS ; PSA ; PSA density ; PSAD ; Prostate Cancer Research International: Active Surveillance ; RP ; SVI ; active surveillance ; apparent diffusion coefficient ; diffusion magnetic resonance imaging ; diffusion weighted magnetic resonance imaging ; extracapsular extension ; magnetic resonance imaging ; prostate specific antigen ; prostatic neoplasms ; radical prostatectomy ; seminal vesicle invasion ; watchful waiting
PURPOSE: We analyzed the pathological outcomes of candidates for active surveillance according to tumor lesion diameter on diffusion weighted magnetic resonance imaging. MATERIALS AND METHODS: We retrospectively analyzed 188 candidates for active surveillance who had undergone diffusion weighted magnetic resonance imaging before radical prostatectomy between 2006 and 2012. We measured the diameter of the suspicious tumor lesion on diffusion weighted magnetic resonance imaging and stratified the cohort into 2 groups. Group 1 included patients with normal magnetic resonance imaging or a suspicious tumor lesion smaller than 1 cm and group 2 included patients with a suspicious tumor lesion larger than 1 cm. We compared pathological outcomes including insignificant prostate cancer in each group and analyzed whether different tumor diameters resulted in a change in insignificant prostate cancer rates. RESULTS: Group 1 consisted of 115 (61.2%) patients and group 2 included 73 (38.8%) patients. In group 1 magnetic resonance imaging was normal in 72 patients. Mean ± SD diameter of suspicious tumor lesions was 12.0 ± 5.58 mm. Tumor volume was significantly different between the groups (0.73 ± 0.86 vs 1.09 ± 1.07 cm(3), p = 0.018), as was the rate of insignificant prostate cancer (48.7% vs 24.7%, p = 0.001). The rate of insignificant prostate cancer decreased as tumor diameter increased over 1 cm. On multivariate logistic regression analysis the diameter of suspicious tumor lesions was an important predictor of insignificant prostate cancer (OR 0.319, p = 0.014). CONCLUSIONS: Our analysis demonstrates that the simple measurement of the diameter of suspicious tumor lesions on diffusion weighted magnetic resonance imaging could improve the prediction of insignificant prostate cancer in candidates for active surveillance.
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1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
Yonsei Authors
Koo, Kyo Chul(구교철) ORCID logo https://orcid.org/0000-0001-7303-6256
Rha, Koon Ho(나군호) ORCID logo https://orcid.org/0000-0001-8588-7584
Lee, Dong Hoon(이동훈)
Lee, Seung Hwan(이승환) ORCID logo https://orcid.org/0000-0001-7358-8544
Chung, Byung Ha(정병하) ORCID logo https://orcid.org/0000-0001-9817-3660
Choi, Young Deuk(최영득) ORCID logo https://orcid.org/0000-0002-8545-5797
Hong, Sung Joon(홍성준) ORCID logo https://orcid.org/0000-0001-9869-065X
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