患者女,50岁。1987年7月份起,进干饭时胸骨后及上腹部有梗阻感,逐渐加重,以至食面条、泡饭时也有梗阻感。同年5月发现左腋窝部有一无痛性肿块,8月份于双锁骨上出现肿块。 体检:体质瘦弱。双侧锁骨上可扪及 Female patient, 50 years old. From July 1987 onwards, there was a feeling of obstruction on the back of the sternum and on the upper abdomen during dry meals, which gradually increased, and there was a sense of obstruction when eating noodles and rice. In the same year in May of the same year, a painless mass was found in the left armpit, and a mass appeared in the double clavicle in August. Physical examination: physical weakness. Bilateral clavicle can be