目的探讨超声术前评估及精准定位在真空辅助微创旋切系统治疗乳腺多发良性包块中的价值。方法选取我院经病理确诊的52例乳腺多发良性包块患者(共156个病灶),其中经超声术前评估及精准定位后行超声引导下乳腺包块旋切手术的患者26例(78...目的探讨超声术前评估及精准定位在真空辅助微创旋切系统治疗乳腺多发良性包块中的价值。方法选取我院经病理确诊的52例乳腺多发良性包块患者(共156个病灶),其中经超声术前评估及精准定位后行超声引导下乳腺包块旋切手术的患者26例(78个病灶,研究组),仅经常规超声检查后行超声引导下乳腺包块旋切手术的患者26例(78个病灶,对照组);比较两组患者的手术旋切时间、旋切刀数及术中出血率。结果两组患者所有包块均被完整切除。研究组手术时间显著短于对照组[(19.88±5.73)min vs.(30.38±9.27)min],旋切刀数显著少于对照组(14.54±6.35 vs. 21.81±9.46),差异均有统计学意义(t=-4.915、-3.254,均P<0.05)。研究组术中出血率[7.7%(2/26)]明显低于对照组[38.5%(10/26)],差异有统计学意义(χ2=6.933,P<0.05)。结论超声术前评估及乳腺包块精准定位联合术中超声引导下真空辅助微创旋切系统治疗乳腺多发包块,可缩短手术时间,减少手术刀数,降低术中出血率,可作为乳腺良性多发包块快速、微创治疗的重要手段。展开更多
Maowusu sandy grassland locating at an ecotone between typical desert and typical grassland contained several landscape ecotypes or elements where Caragana intermedia Kuang et H.C.Fu naturally distributed as a dominan...Maowusu sandy grassland locating at an ecotone between typical desert and typical grassland contained several landscape ecotypes or elements where Caragana intermedia Kuang et H.C.Fu naturally distributed as a dominant species in shrub ecosystems. Based on a phenomenon of gene segregation of open-pollinated seeds within each plants similar to Mendel’s segregation in F 2, a study on testing the breeding systems of populations under 4 landscape ecotypes was conducted. Statistical data showed its availability in estimation of breeding system parameters when isozymes were used as genetic markers. Nei’s genetic differentiation G ST among 4 ecotypes in Maowusu was estimated at 0.07 from lap loci close to a G ST=0.076 reported in the authors’ laboratory. The results indicated that breeding systems of populations gradually changed from total outbreeding to partial inbreeding when water conditions worsened. Therefore, the former RAPD data, especially the cline of frequencies for a few polymorphic DNAs in different landscapes can be partially explained by gene fixation caused by selfing or inbreeding probably induced by drought. It was difficult to assess breeding system parameters by using one dimensional SDS polyacrylamide gel electrophoresis of seed proteins of C. intermedia simply due to a difficulty of genetic analysis of seed protein subunits.展开更多
文摘目的探讨超声术前评估及精准定位在真空辅助微创旋切系统治疗乳腺多发良性包块中的价值。方法选取我院经病理确诊的52例乳腺多发良性包块患者(共156个病灶),其中经超声术前评估及精准定位后行超声引导下乳腺包块旋切手术的患者26例(78个病灶,研究组),仅经常规超声检查后行超声引导下乳腺包块旋切手术的患者26例(78个病灶,对照组);比较两组患者的手术旋切时间、旋切刀数及术中出血率。结果两组患者所有包块均被完整切除。研究组手术时间显著短于对照组[(19.88±5.73)min vs.(30.38±9.27)min],旋切刀数显著少于对照组(14.54±6.35 vs. 21.81±9.46),差异均有统计学意义(t=-4.915、-3.254,均P<0.05)。研究组术中出血率[7.7%(2/26)]明显低于对照组[38.5%(10/26)],差异有统计学意义(χ2=6.933,P<0.05)。结论超声术前评估及乳腺包块精准定位联合术中超声引导下真空辅助微创旋切系统治疗乳腺多发包块,可缩短手术时间,减少手术刀数,降低术中出血率,可作为乳腺良性多发包块快速、微创治疗的重要手段。
文摘Maowusu sandy grassland locating at an ecotone between typical desert and typical grassland contained several landscape ecotypes or elements where Caragana intermedia Kuang et H.C.Fu naturally distributed as a dominant species in shrub ecosystems. Based on a phenomenon of gene segregation of open-pollinated seeds within each plants similar to Mendel’s segregation in F 2, a study on testing the breeding systems of populations under 4 landscape ecotypes was conducted. Statistical data showed its availability in estimation of breeding system parameters when isozymes were used as genetic markers. Nei’s genetic differentiation G ST among 4 ecotypes in Maowusu was estimated at 0.07 from lap loci close to a G ST=0.076 reported in the authors’ laboratory. The results indicated that breeding systems of populations gradually changed from total outbreeding to partial inbreeding when water conditions worsened. Therefore, the former RAPD data, especially the cline of frequencies for a few polymorphic DNAs in different landscapes can be partially explained by gene fixation caused by selfing or inbreeding probably induced by drought. It was difficult to assess breeding system parameters by using one dimensional SDS polyacrylamide gel electrophoresis of seed proteins of C. intermedia simply due to a difficulty of genetic analysis of seed protein subunits.
