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05 April 2019 : Clinical Research  

The Role of Tumor Oxygenation Tested by Magnetic Resonance Imaging (MRI) in Prostate Cancer Grading

Huaizhen Geng1BC, Wen Tong2AD, Fangzheng Han3E, Kunming Zhu4DG, Yumei Cao5BF, Xiude Chen6AE*

DOI: 10.12659/MSM.913110

Med Sci Monit 2019; 25:2505-2510

Abstract

BACKGROUND: Prostate cancer is a common malignant tumor in males. Prostate cancer grading is an important basis for evaluation of invasion. The purpose of this article was to use dynamic enhanced scan magnetic resonance imaging (MRI) to quantitatively investigate the relationship between tumor oxygenation value and prostate cancer pathological Gleason score.

MATERIAL AND METHODS: A total of 312 prostate cancer patients diagnosed by needle biopsy who received MRI dynamic enhanced scan were enrolled in this study. Multiparameter oxygen concentration image based on MRI was applied to test pO2 in tumors. Multiple spin resonance image relaxation time edit sequence and weak field diffusion model were used to estimate oxygen saturation level and pO2. hematoxylin and eosin staining and Gleason score were used to determine biological behavior and prognosis.

RESULTS: According to the Gleason score system, there were 28 cases with a score of 10, 112 cases with a score of 9, 56 cases with a score of 8, and 116 cases with a score lower than 7. The enrolled patients were divided into groups: 116 cases into the middle-to-well differentiation group (Gleason score ≤7) and 196 cases into the poorly differentiation group (Gleason score at 8 to 10). Prostate cancer tumor oxygenation value was positively correlated with Gleason score (r=0.349, P<0.05) or PSA (r=0.432, P<0.05). Tumor oxygenation value in Gleason ≤7 group was obviously different from that in the group with Gleason score between 9 and 10 (P<0.05).

CONCLUSIONS: Tumor oxygenation value in prostate cancer was positively correlated with Gleason score. Tumor oxygenation value might be useful in clinics to evaluate prostate cancer grading and prognosis.

Keywords: Magnetic Resonance Imaging, Neoplasm Grading, Prostatic Neoplasms, Image-Guided Biopsy, Oxygen, Prostate, Prostate-Specific Antigen

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750