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Abstract #1007

PI-RADS Version 2: Preoperative Role in the Detection of Normal-sized Pelvic Lymph Node Metastasis in Prostate Cancer

Young Taik Oh1, Sung Yoon Park1, and Dae Chul Jung1

1Radiology, Yonsei University College of Medicine, Seoul, Korea, Republic of

Although the identification of pelvic lymph node metastasis (PLNM) is important in prostate cancer, sometimes PLNM are often not so enlarged on imaging. Therefore, we were trying to identify normal sized PLNM through PI-RADS v2 scores of 221 patients with prostate cancer. In our study, a threshold of PI-RADS v2 score of 5 seems to be associated with an increased risk of normal-sized PLNM, which may help identify the need for further node-specific imaging studies or pelvic lymph node dissection when a patient with prostate cancer has only normal-sized pelvic lymph nodes on preoperative imaging.

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