首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
共用题干 第二篇CT Scans and Lung CancerSmall or slow-growing nodules(小结节)discovered...
共用题干 第二篇CT Scans and Lung CancerSmall or slow-growing nodules(小结节)discovered...
admin
2020-12-24
64
问题
共用题干
第二篇
CT Scans and Lung Cancer
Small or slow-growing nodules(小结节)discovered on a lung scan are unlikely to develop into tumors
over the next two years,researchers reported on Wednesday.
The findings,reported in the New England Journal of Medicine,could help doctors decide when to do
more aggressive testing for lung cancer. They could also help patients avoid unnecessarily aggressive and
potentially harmful testing when lesions(损伤)are found.
Lung cancer,the biggest cancer killer in the United States and globally,is often not diagnosed until it
has spread. It kills 159,000 people a year in the United States alone.
The work is part of a larger effort to develop guidelines to help doctors decide what to do when such
growths,often discovered by accident,appear in a scan.
High-tech(高技术的)X-rays called CT scans can detect tumors一but they see all sorts of other blobs
(模糊的一团)that are not tumors , and often the only way to tell the difference is to take a biopsy(活检),
a dangerous procedure.
At the moment,routine lung cancer screening is considered impractical because of its high cost and
because too many healthy people are called back for further testing.
Good guidelines could help make lung cancer screening practical,Dr. Rob van Kiaveren of the Erasmus
Medical Center in Rotterdam,the Netherlands,who led the new study,said in a telephone interview.
The team looked at 7,557 people at high risk for lung cancer because they were current or former
smokers. All received multidetector(多层螺旋)CT scans that measured the size of any suspicious-looking
nodules.
Volunteers who had nodules over 9.7 mm in width,or had growth of 4. 6 mm that grew fast enough to more
than double in volume every 400 days,were sent for further testing. Of the 196 people who fell into that category,
70 were found to have lung cancer;10 additional cases were found years later.
But of the 7 ,361 who tested negative during screening,only 20 lung cancer cases later developed.
In a second round of screening done one year after the first,1.8 percent were sent to the doctor because they
had a nodule that was large or fast-growing. More than half turned out to have lung cancer.
The result means that if the screening test says you don't have lung cancer,you probably don't,the re-
searchers said."The chances of finding lung cancer one or two years after a negative first-round test were
1 in 1,000 and 3 in 1,000 respectively,"they concluded.
选项
Which is probably NOT true of lung cancer?
A:Smokers are usually considered to be at high risk for it.
B:It is the leading cause of cancer deaths around the world.
C:159,000 new cases of it are diagnosed in the U.S.each year.
D:It often goes unnoticed until it has spread.
答案
C
解析
根据第一段的叙述可知,肺部扫描发现的小的、生长缓慢的结节在接下来的两年里不 会发展成肿瘤,因此活检或进一步的检查是不必要的。
选项A、B、D在文中第三段和第八段中提到过,而选项C所讲的159 000人被确诊为肺 癌不符合第二段中提及的159 000人死于肺癌的事实。
根据文章第四段中“The work is part of a larger effort to develop guidelines to help doctors decide...”可知,专家们正在发展和完善对医生的指导方针。
根据文章第十一段可知,A项正确、B项错误;由第八段中“…7 ,557 people at high risk" 可知C项正确;由第八段“The team looked at 7 , 557 people”和第十段“7 , 361 who tested nega- tive”可知D项正确。
根据最后一段,我们知道这个患病比率在专家眼里是非常小的,如果首次检查表明你 没有患肺癌,你就很可能不会得肺癌。
转载请注明原文地址:https://ti.zuoweng.com/ti/AB9QKKKQ
相关试题推荐
共用题干 Self-relianceThemostimportantthingtounderstandaboutAmericansis...
共用题干 Self-relianceThemostimportantthingtounderstandaboutAmericansis...
共用题干 Self-relianceThemostimportantthingtounderstandaboutAmericansis...
共用题干 Self-relianceThemostimportantthingtounderstandaboutAmericansis...
共用题干 Self-relianceThemostimportantthingtounderstandaboutAmericansis...
共用题干 Self-relianceThemostimportantthingtounderstandaboutAmericansis...
共用题干 Self-relianceThemostimportantthingtounderstandaboutAmericansis...
共用题干 AHeroicWomanThewholeoftheUnitedStatescheereditslatesthero,As...
共用题干 AHeroicWomanThewholeoftheUnitedStatescheereditslatesthero,As...
共用题干 AHeroicWomanThewholeoftheUnitedStatescheereditslatesthero,As...
随机试题
通草的药用部位为 A、心材 B、茎 C、全草 D、叶 E、茎髓
内部审计师对采购部门确定的最低存货数据水平是否恰当进行审查,最可能考虑下列哪些因
(471-473题共用备选答案) A.肾结核 B.肾肿瘤 C.肾结石 D
下列在兄弟行辈中长幼排行的次序中表示老四的是()。 A.季 B.孟 C.
下面哪项是球菌性口炎的治疗方法 A、注射干扰素或转移因子,口服止痛药物 B
某些经营性的公益事业、基础设施投资方案,应按有关规定估算企业可能得到与收益相关的
男性,45岁。气短20年,两年来常有胸骨后疼痛,胸骨右缘第2肋间可闻及3级收缩期
某项目大气环境影响评价等级为一级,距项目最近的地面气象观测站和高空气象探测站分别为38km和55km。下列气象观测资料调查中,符合《环境影响评价技术导则—...
分布比较均匀的消费者对商品房所在区域和配套设施等各有不同的要求,这表明消费者具有( )。A:同质性偏好B:异质性偏好C:分散性偏好D:群组性偏好
根据《社会保险法》的规定,下列属于职工基本养老保险费征缴范围的有()。A.国有企业B.城镇集体企业C.外商投资企业D.城镇私营企业