问题 单项选择题 A2型题

患者男性,69岁,胃肠超声检查于胃壁探及一大小为11cm×9cm,形态不规则,边界不清的不均匀低回声肿块,中心部可见大片不规则液化坏死区,实性部分血流信号不明显,胃黏膜受侵,超声诊断考虑()。

A.胃息肉

B.胃平滑肌肉瘤

C.胃脂肪瘤

D.胃平滑肌瘤

E.胃恶性淋巴瘤

答案

参考答案:B

解析:胃息肉大小一般不超过2cm,为自黏膜向腔内隆起性病变;胃脂肪瘤一般较小,为胃黏膜下类圆形肿块,边界清楚,呈均匀的强回声;胃平滑肌瘤一般小于5cm,为边界清晰的均匀的低回声肿块;胃恶性淋巴瘤探头加压易变形,回声近似无回声;平滑肌肉瘤的体积较大,边界不清且不规则,内部常发生液化及溃疡,彩色多普勒血流信号不明显,符合本题声像图特征。

阅读理解

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73. If you want to have a talk, you have to _______.

A. wait patiently           B. write to the author in advance

C. be on the line            D. make an appointment

74. Which is NOT true according to the passage?

A. The writer sometimes writes questions into an article.

B. The writer can be visited on Monday — November 22.

C. The talker has to type a “?” mark on the screen.

D. Anyone who asks questions must come to the chat room.

75. The chat with the writer on the screen _______.

A. lasts a long time            B. must be about children’s health questions

C. has to be called on Monday   D. will become articles to be published

单项选择题