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《Radiologic Practice》 2002-01
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The value of CT diagnosis and staging of prostate cancer

YUAN Ren,SHI Heshui,HAN Ping,et al.Department of Radiology,Xiehe Hospital,Tongji Medical College,Huazhong University of Science and Technology,Hubei 430022  
Objective:To evaluate CT in the diagnosis and staging of prostate cancer.Methods:40 cases of prostate cancer,of which 24 cases were confirmed by pathology and biopsy and 16 by clinical data,were performed CT scanning.12 of 40 cases were processed with 3D MPR.A comparative study of CT staging and clinical staging referred to JW criteria was subsequently made. Results:In 40 cases of prostate cancer,their CT appearances were as following:the prostate was normal in size in 2 cases and enlarged in 38 cases;the lesion was limited in the prostate in 17 cases and extended over the prostate in 23;the density of mass was lower than the normal prostate in 27 cases(67.5%) and there was mixed density with equal to and lower than normal in 3 cases (7.5%).The density of mass in 10 cases (25%) appeared equal to normal on non enhanced CT but turned lower on enhanced.Patchy calcification was seen in 13 cases. Involvement of seminal vesicle,bladder and rectum,pelvic lymph nodes enlargement and distant metastasis were shown in 11,19,9,5,6 cases respectively.The comprehensive CT signs were demonstrated in 23 cases (57.5%).The accuracy of CT staging in stage C,D and overall accuracy was 90%, 66.7% and 82.5%,respectively.The sensitivity of CT was 90% for distinction between stage A/B and C/D.Conclusion:The comprehensive CT signs may be specific in diagnosing prostate cancer which together with 3D MPR are helpful to locate tumor. CT can accurately distinguish prostate cancer with the stage A/B from C/D,and make an accurate diagnosis of prostate cancer with the stage C/D.
【CateGory Index】: R737.25
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