Relationship between Gleason score and apparent diffusion coefficients of diffusion-weighted magnetic resonance imaging in prostate cancer patients

  • Tae Heon Kim
  • Chan Kyo Kim
  • Byung Kwan Park
  • Hwang Gyun Jeon
  • Byung Chang Jeong
  • Seong Il Seo
  • Hyun Moo Lee
  • Han Yong Choi
  • Seong Soo Jeon

Abstract

Introduction: We assessed the correlation between the apparent diffusion coefficient (ADC) and pathological Gleason score (GS) of prostate cancer patients.

Methods: A total of 125 patients who underwent multiparametric magnetic resonance imaging before radical prostatectomy for prostate cancer were included in this study. ADC values were compared with different GS. We used receiver operating characteristic analysis and determined the ADC cutoff value to differentiate tumours with a GS of 6 from those with a GS ≥7.

Results: We identified 34 patients (27.2%) with a GS of 6; 33 patients (26.4%) with a GS of 7; 22 patients (17.6%) with a GS of 8; and 36 patients (28.8%) with a GS of ≥9. The mean ADC value for disease with a GS of 6 was 0.914 ± 0.161 x10-3 mm2/s; GS of 7: 0.741 ± 0.164 x10-3 mm2/s; GS of 8: 0.679 ± 0.130 x10-3 mm2/s; and GS of ≥9: 0.593 ± 0.089 x10-3 mm2/s. An ADC value of 0.830 ×10−3mm2/s was the best cutoff value to identify prostate cancer with a GS of 6.

Conclusions: We observed an inverse relationship between GS and ADC value. Moreover, a cutoff ADC value may help differentiate disease with a GS of 6 from disease with a GS ≥7.

Published
2016-11-10
How to Cite
Kim, T. H., Kim, C. K., Park, B. K., Jeon, H. G., Jeong, B. C., Seo, S. I., Lee, H. M., Choi, H. Y., & Jeon, S. S. (2016). Relationship between Gleason score and apparent diffusion coefficients of diffusion-weighted magnetic resonance imaging in prostate cancer patients. Canadian Urological Association Journal, 10(11-12), E377-82. https://doi.org/10.5489/cuaj.3896
Section
Original Research