A comparison of lymph node staging between 68Ga-PSMA PET-CT and mpMRI in patients with prostate cancer
HUANG Shiming1, YUE Jianlan1, YIN Liang1, SUN Yongfeng2, LIN Zhichun1
1. Department of Nuclear Medicine, Featured Medical Center of Chinese People’s Armed Police Force, Tianjin 300162, China; 2. Department of Military Medicine and Special Discipline, Beijing Armed Police Corps Hospital, Beijing 100027, China
Abstract:Objective To evaluate the diagnostic value of 68Ga-PSMA PET/CT and mpMRI in prostate cancer with lymph node metastasis.Methods The Chinese and English databases at home and abroad were searched for diagnostic clinical trials related to 68Ga-PSMA PET/CT and mpMRI imaging used for diagnosis of prostate cancer patients with lymph node metastasis. The original data in the literature was retrieved based on patients or lesions. The data was integrated and analyzed by software, including the sensitivity (SEN), specificity (SPE), positive likelihood ratio (PLR), negative likelihood ratio (NLR), diagnostic odds ratio (DOR), and the area under the SROC curve (AUC) of 68Ga-PSMA PET/CT and mpMRI imaging in diagnosing prostate cancer with lymph node metastasis.Results A total of 13 eligible articles were included. The patient-based analysis suggested that the SEN, SPE, PLR, NLR, DOR, and AUC of 68Ga-PSMA PET/CT for prostate cancer patients with lymph node metastasis were 0.44, 0.93, 5.25, 0.61, 9.67, and 0.90 respectively, while those of mpMRI imaging were 0.44, 0.95, 5.46, 0.62, 12.06 and 0.90 respectively, compared with 0.58, 0.99, 61.22, 0.24, 308.06 and 0.99 with 68Ga-PSMA PET/CT, and 0.61, 0.99, 27.17, 0.36, 90.48 and 0.99 with mpMRI imaging when the analysis was based on lymph nodes.Conclusions Both 68Ga-PSMA PET/CT and mpMRI imaging have high specificity but poor sensitivity in diagnosing prostate cancer with lymph node metastasis, and mpMRI may be of higher clinical value for the diagnosis of prostate cancer with lymph node metastasis.
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