Hormonal ablation of prostatic cancer: effects on prostate morphology, tumor detection, and staging by endorectal coil MR imaging

AJR. American Journal of Roentgenology
M ChenPeter R Carroll

Abstract

The purpose of our study was to evaluate the effect of androgen deprivation therapy on the MR imaging findings of prostate gland anatomy and cancer pathology in men with prostatic cancer treated with hormonal ablation before radical prostatectomy. Twenty-two patients (mean age, 66 years old) were divided into two groups: in group I (n=10), MR imaging studies were done before and after hormonal treatment; in group II (n=12), MR imaging studies were done only after hormonal treatment. MR imaging was performed on a 1.5 T-scanner (Signa; General Electric Medical Systems, Milwaukee, WI) and included transverse plane phased-array coil T1-weighted images (TR/TE, 600/12), combined endorectal phased-array coil transverse plane T1-weighted images, fast spin-echo T2-weighted (4000/102), and coronal plane fast spin-echo T2-weighted images. Image evaluation was by consensus and included assessment of the gland size, signal intensity, tumor depiction, extracapsular extension, seminal vesicle invasion, and overall staging accuracy (Jewett and Whitmore classification). MR imaging findings were correlated with pathologic findings of step section radical prostatectomy. After hormonal therapy, the volume of the prostate gland showed a mean decrea...Continue Reading

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