女，22岁，颈前肿物3个月。查体：右叶甲状腺可触及一质硬结节，直径2cm。同侧颈淋巴结可及2个，质中，活动。B型超声：甲状腺右叶一低回声实性团块。为明确肿物良恶性，下列各项检查，首先应选择（）
A.同位素扫描
B.血清降钙素测定
C.针吸细胞学检查
D.颈部软组织显像
E.右侧颈淋巴结活检
参考答案：C
解析：甲状腺癌的诊断主要根据临床表现，若甲状腺肿块质硬、固定，颈淋巴结肿大，或有压迫症状者，或存在多年的甲状腺肿块，在短期内迅速增大者，均应怀疑甲状腺癌，细针穿刺细胞学检查可帮助诊断，正确率达80%以上。
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| Everyone has their own dreams. They give us courage (勇气) and confidence to keep us going through difficulties. Here 1 some advice on how to realize our beautiful dreams. 2 giving up is the key to making our dreams come true. We may fail from time to time, 3 we can learn from failure(失败), correct our mistakes and try again until we achieve our goals. For that reason, no matter 4 difficult problems we meet, we won't fail unless (除非) we give up our hopes. Our life is like a long journey which is not all roses. It sometimes has wind and rain. We believe rainbows (彩虹) will appear after storms. We will realize our dreams 5 last if we do our best. Cooperation(合作) is also necessary. Everyone likes a person who is good at cooperating with others. Besides, in our society, most problems can't be 6 by one person alone. 7 is like a small part of a machine. If one part isn't 8 , the machine can not work well. It's hard for a person who is away from the society to have a deep understanding of the world. Cooperation is becoming one of 9 aways for people living in the developing society. As a saying goes, "One tree doesn't make a 10 ." At the same time, we should learn to examine our abilities because it helps us know about our advantages and disadvantages as well as get a full control of ourselves. Then we may be confident enough to face challenges. Follow the suggestions above, and our dreams are sure to come true. | |||
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