问题
单项选择题 案例分析题
男性，48岁。B超查体时发现左侧肾下极有一4．5cm×3．2cm实性占位，肾门处有一直径1．5cm肿物。静脉肾盂造影：两肾无异常改变。
如果诊断为肾癌，其组织学来源是（）
A.肾盂肾盏移行上皮
B.胚胎性肾组织
C.肾血管组织
D.肾内平滑肌组织
E.肾小管上皮细胞
答案
参考答案：E
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男性，48岁。B超查体时发现左侧肾下极有一4．5cm×3．2cm实性占位，肾门处有一直径1．5cm肿物。静脉肾盂造影：两肾无异常改变。
如果诊断为肾癌，其组织学来源是（）
A.肾盂肾盏移行上皮
B.胚胎性肾组织
C.肾血管组织
D.肾内平滑肌组织
E.肾小管上皮细胞
参考答案：E
How to protect your teeth 小题1: . The first of twenty being to grow when you are over six months old. The second set of thirty-two grows from the age of six until you are about twenty-one years old. 小题2: , you must drink plenty of milk and eat greens. 小题3: . Then little food will be left on or between them to cause decay(导致蛀牙). Make sure that you turn the brush and go up and down as well as brushing side ways. Use dental floss(牙线)to make sure all food is removed from in between each tooth, if you cannot brush your teeth after eating, raise them with water, or eat an apple or a carrot. 小题4: . If there is a hole in a tooth, he or she will fill it. If you do not have it filled, then the hole will grow larger. When a hole grows too big, 小题5: . It is better to keep all your second set of teeth for as long as possible. Filling a gap where a tooth has come out with a kind of bridge and using a false tooth costs a lot of money.
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