男，64岁，前胸部肿胀疼痛3月余，质硬，局部压痛，无发热。血常规检查示贫血。
患者已行胸部CT平扫，主要图像如下，最可能的疾病为哪种（）
A.骨结核
B.骨肉瘤
C.化脓性骨髓炎
D.骨髓瘤
E.骨血管瘤
F.软骨肉瘤
参考答案：D
解析：骨髓瘤的实验室检查中，约50％患者出现Bence-Jones蛋白尿，有诊断意义；骨髓涂片可找到骨髓瘤细胞，可确诊。胸部平片、胸部CT肺窗及纵隔窗观察，排除肺内占位性病变，有助于鉴别骨转移瘤。胸壁超声检查意义不大。血冷凝集试验用于支原体肺炎的诊断。
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| About 10 years ago I taught a group of children to sail. They were bright, enthusiastic and as eager to 1 life as any other children. All, however, had a serious 2 . Three were in wheelchairs, one was nearly blind and two walked with difficulty, and another two 3 a lot from Cerebral palsy (脑瘫). Matthew was among them. His hands, arms, legs, and even his voice were all distorted (扭曲) from the disease. To speak, Matthew had the help of a 4 . Slowly, and with determination, he would 5 with distorted hands, letter by letter, what he wanted to say. Yet he was always bright and cheerful and loved to 6 everything his classmates were doing, both in the boat and in the classroom. They learnt fast and enjoyed every minute of the 7 . But I think that 1 was the one who learned the greatest lesson. One day the sailing centre was 8 by a storm. Rather than 9 the activity we decided to work in a classroom. All the children 10 . Just like other children they all wanted to answer the questions I asked. Often they would loudly 11 each other, trying to give an answer before one of the others. But when Matthew wanted to answer a question it was 12 . All of a sudden they all 13 . Matthew whispered and moved his hands at his letter-board. They 14 with great patience. Matthew 15 with dogged persistence (坚持) until the answer was 16 . When Matthew had answered his question the children were, almost magically, transformed back into a group of 17 and enthusiastic children. All of these children were heroes in their own way. But the 18 they afforded to Matthew with his most severe disabilities was 19 . If only the rest of the world were able to learn to afford care, respect and help to someone less 20 than themselves, violence and intolerance (不宽容) would possibly be gone. | ||||
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