问题 多项选择题

卵巢癌的主要CT表现有()。

A.多为囊实性并存

B.腹腔内液性低密度腹腔积液

C.囊变卵巢癌囊壁厚且不规则

D.增强扫描实体部分有明显强化

E.增强扫描不强化

答案

参考答案:A, B, C, D

解析:

卵巢癌的CT直接征象:

①盆腔肿块,常累及双侧,多为囊实性、分叶状,大小不等;

②实性部分多明显强化,囊性部分多有分隔,壁厚薄不均;

③周围脂肪间隙消失。

间接征象:

①盆腔内蔓延,邻近脏器受累,脂肪间隙消失或不清;

②输尿管受累导致上段输尿管、肾盂扩张;

③腹腔积液,量多,且CT值偏高。

转移征象:

①种植转移,壁腹膜转移,呈宽带状、结节状及肿块状;

②大网膜转移,大网膜弥漫性增厚、密度不均匀增高,形如饼状、结节状;

③肝转移,多为低密度结节,部分呈钙化性转移;

④腹膜后淋巴结转移,体积增大,部分中央坏死。

阅读理解

No one knows yet the accurate number of lives which have been lost in this terrible fire .But reports suggest that it is more than one hundred .

A wall of flames fifty feet high and at least one hundred and fifty miles wide is now racing towards the forests and rich farmlands of southern Victoria . Towns less than one hundred miles from Melbourne will be in danger unless the wind changes . People are rushing excitedly into the streets . The police have warned them not to see the fire but many people are doing so .

The cause of the fire is unknown . No rain has fallen in this part of Australia for three months , and the hot , north-west wind from the great central desert is blowing at more than thirty miles an hour .

The firefighters are travelling to the fire by road , rail and air . But it is not easy to get there . Flames and fallen trees have cut off or blocked roads and railway lines . The thick smoke often prevents them from finding the air strips (飞机跑道).

It is said that the fire has brought the greater danger to the country since the Second World War .

小题1:By the time the article was written , the fire        .

A.had just broken out

B.had been put out

C.was spreading violently

D.was coming to an end小题2:The writer wrote this article mainly to tell people        .

A.the fire was terrible and dangerous

B.it was impossible to put out the fire

C.more than one hundred people died of the fire

D.to join in the fight against the fire小题3:In the 4th paragraph , the writer suggested that        .

A.the fire would soon be controlled by the firefighters

B.it would be very difficult to put out the fire

C.the government was paying great attention to the fire

D.the fire had caused great losses and the airport was in ganger小题4:The underlined word “ accurate” in the first sentence has the same meaning as        .

A.recent

B.whole

C.rough

D.exact

单项选择题