乳腺癌根治术后锁骨上／腋顶野的放射治疗剂量为（）。
A.40Gy/4周
B.50Gy/5周
C.56Gy/5～6周
D.60Gy/6周
E.以上都不是
参考答案：B
解析：乳腺癌术后放射治疗主要是针对局部和区域淋巴结复发高危者，即T3或腋窝淋巴结阳性≥4个，或1～3个淋巴结阳性但腋窝淋巴结检测不彻底者。术后照射靶区包括锁骨上淋巴结区，对原发灶>5cm，皮肤有水肿、破溃，红斑或与胸肌固定，腋窝淋巴结转移>20%或≥4个者，术后放疗靶区还应包括胸壁。术后放射治疗的剂量为50Gy/5周。
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| When you are invited to a meal in Thailand, the wards of the invitation 1 "come and eat rice". In fact 2 all Thai dishes are eaten with rice, which grows there easily 3 the climate is warm and there is much 4 . The food that is served is 5 cut into pieces, so there is no need to use knives and forks 6 , instead, special spoons and forks are used. The Thais 7 to eat with their hands and now there are still some people who eat this 8 . There is a special way of doing it. First they wash their 9 hands in a bowl of water, they only eat with their right hands. They are careful not to let the food 10 the palms of their hands. After the meal, the 11 are again carefully washed. The meal usually has several different 12 . They are all hot. They are served in bowls which everyone shares, 13 each person has their own bowl of rice. 14 Thailand has a long coastline, it is not surprising 15 fish and shellfish play an important part in Thai cooking.
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