目的研究基质金属蛋白酶-2,9(matrix metalloproteinase-2,9,MMP-2,9)及组织基质金属蛋白酶抑制剂-1,2(timue inhibitors of the MMP-1,2,TIMP-1,2)与鼻咽癌侵袭的关系。方法用免疫组化S-P法,检测48例鼻咽癌组织及16例鼻咽炎组织中MMP-2...目的研究基质金属蛋白酶-2,9(matrix metalloproteinase-2,9,MMP-2,9)及组织基质金属蛋白酶抑制剂-1,2(timue inhibitors of the MMP-1,2,TIMP-1,2)与鼻咽癌侵袭的关系。方法用免疫组化S-P法,检测48例鼻咽癌组织及16例鼻咽炎组织中MMP-2,MMP-9,TIMP-1,TIMP-2的表达。结果 鼻咽癌与鼻咽炎两组病人TIMP-1,TIMP-2比较有统计学意义(P<0.01),随着鼻咽癌原发灶T分期的发展,TIMP-1有增加的趋势。结论TIMP-1可以作为监测鼻咽癌侵袭的参数之一。展开更多
OBJECTIVE To evaluate the feasibility of the Breast Imaging Reporting and Data System (BI-RADS) in the categorization of nonpalpable breast lesions (NPBLs) and to determine its value in aiding decision-making for ...OBJECTIVE To evaluate the feasibility of the Breast Imaging Reporting and Data System (BI-RADS) in the categorization of nonpalpable breast lesions (NPBLs) and to determine its value in aiding decision-making for biopsy in a Chinese population. METHODS One hundred and seventy-four nonpalpable breast lesions in 155 female patients examined by mammography were retrospectively categorized according to the BI-RAD System, 4th edition, which was established by the American College of Radiology (ACR). All the lesions were diagnosed by a histopathological analysis after mammographically guided wire-localization biopsy. RESULTS The 174 Iocalizations yielded 125 (71.8%) benign lesions and 49 (28.2%) cancers, including 14 (28.6%) ductal carcinomas in situ and 35 (71.4%) invasive cancers. The overall positive predictive value (PPV) for cancer was 28.2% (49/174). After categorization according to the BI- RAD System, there were 12 category 2, 59 category 3, 83 category 4 and 20 category 5 lesions. The PPV for cancer for each category were 0% (0 of 12 lesions) in category 2, 3.4% (2 of 59 lesions) in category 3, 37.3% (31 of 83 lesions) in category 4 and 80.0% (16 of 20 lesions) in category 5. t is concluded that BI-RADS is valuable for the catego- rization of nonpalpable breast lesions in our Chinese population. This system greatly improved the diagnostic specificity of nonpalpable breast lesions and was feasible in aiding decision-making for biopsy. It is suggested that nonpalpable breast lesions in categories BI-RADS 4 and 5 should receive a biopsy because these lesions have a moderate and high positive predictive value for cancer.展开更多
文摘目的研究基质金属蛋白酶-2,9(matrix metalloproteinase-2,9,MMP-2,9)及组织基质金属蛋白酶抑制剂-1,2(timue inhibitors of the MMP-1,2,TIMP-1,2)与鼻咽癌侵袭的关系。方法用免疫组化S-P法,检测48例鼻咽癌组织及16例鼻咽炎组织中MMP-2,MMP-9,TIMP-1,TIMP-2的表达。结果 鼻咽癌与鼻咽炎两组病人TIMP-1,TIMP-2比较有统计学意义(P<0.01),随着鼻咽癌原发灶T分期的发展,TIMP-1有增加的趋势。结论TIMP-1可以作为监测鼻咽癌侵袭的参数之一。
文摘OBJECTIVE To evaluate the feasibility of the Breast Imaging Reporting and Data System (BI-RADS) in the categorization of nonpalpable breast lesions (NPBLs) and to determine its value in aiding decision-making for biopsy in a Chinese population. METHODS One hundred and seventy-four nonpalpable breast lesions in 155 female patients examined by mammography were retrospectively categorized according to the BI-RAD System, 4th edition, which was established by the American College of Radiology (ACR). All the lesions were diagnosed by a histopathological analysis after mammographically guided wire-localization biopsy. RESULTS The 174 Iocalizations yielded 125 (71.8%) benign lesions and 49 (28.2%) cancers, including 14 (28.6%) ductal carcinomas in situ and 35 (71.4%) invasive cancers. The overall positive predictive value (PPV) for cancer was 28.2% (49/174). After categorization according to the BI- RAD System, there were 12 category 2, 59 category 3, 83 category 4 and 20 category 5 lesions. The PPV for cancer for each category were 0% (0 of 12 lesions) in category 2, 3.4% (2 of 59 lesions) in category 3, 37.3% (31 of 83 lesions) in category 4 and 80.0% (16 of 20 lesions) in category 5. t is concluded that BI-RADS is valuable for the catego- rization of nonpalpable breast lesions in our Chinese population. This system greatly improved the diagnostic specificity of nonpalpable breast lesions and was feasible in aiding decision-making for biopsy. It is suggested that nonpalpable breast lesions in categories BI-RADS 4 and 5 should receive a biopsy because these lesions have a moderate and high positive predictive value for cancer.