Multiparametric Magnetic Resonance Imaging of Prostate Cancer Bone Disease: Correlation With Bone Biopsy Histological and Molecular Features.
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Date
2018-02-01Author
Perez-Lopez, R
Nava Rodrigues, D
Figueiredo, I
Mateo, J
Collins, DJ
Koh, D-M
de Bono, JS
Tunariu, N
Type
Journal Article
Metadata
Show full item recordAbstract
OBJECTIVES: The aim of this study was to correlate magnetic resonance imaging (MRI) of castration-resistant prostate cancer (CRPC) bone metastases with histological and molecular features of bone metastases. MATERIALS AND METHODS: Forty-three bone marrow biopsies from 33 metastatic CRPC (mCRPC) patients with multiparametric MRI and documented bone metastases were evaluated. A second cohort included 10 CRPC patients with no bone metastases. Associations of apparent diffusion coefficient (ADC), normalized b900 diffusion-weighted imaging (nDWI) signal, and signal-weighted fat fraction (swFF) with bone marrow biopsy histological parameters were evaluated using Mann-Whitney U test and Spearman correlations. Univariate and multivariate logistic regression models were analyzed. RESULTS: Median ADC and nDWI signal was significantly higher, and median swFF was significantly lower, in bone metastases than nonmetastatic bone (P < 0.001). In the metastatic cohort, 31 (72.1%) of 43 biopsies had detectable cancer cells. Median ADC and swFF were significantly lower and median nDWI signal was significantly higher in biopsies with tumor cells versus nondetectable tumor cells (898 × 10 mm/s vs 1617 × 10 mm/s; 11.5% vs 62%; 5.3 vs 2.3, respectively; P < 0.001). Tumor cellularity inversely correlated with ADC and swFF, and positively correlated with nDWI signal (P < 0.001). In serial biopsies, taken before and after treatment, changes in multiparametric MRI parameters paralleled histological changes. CONCLUSIONS: Multiparametric MRI provides valuable information about mCRPC bone metastases. These data further clinically qualify DWI as a response biomarker in mCRPC.
Collections
Subject
Humans
Bone Neoplasms
Prostatic Neoplasms
Magnetic Resonance Imaging
Biopsy
Retrospective Studies
Cohort Studies
Aged
Aged, 80 and over
Middle Aged
Male
Research team
Prostate Cancer Targeted Therapy Group
Language
eng
License start date
2018-02
Citation
Investigative radiology, 2018, 53 (2), pp. 96 - 102
Publisher
LIPPINCOTT WILLIAMS & WILKINS