患者男,62岁。主因右锁骨内侧肿物、间歇性轻度疼痛而来院就诊,无胸闷、气促等症状。体检:浅表淋巴结未扪及肿大,右锁骨胸骨端隆起,并可扪及大小约8.0cm×6.5cm肿物,边界不清、质硬且固定,压痛不明显。实验室检查:常规生化各项、免疫球蛋白五项均正常,尿本-周氏蛋白阴性,血清蛋 Male patient, 62 years old. Mainly because of the right medial clavicle, intermittent mild pain and hospital treatment, no chest tightness, shortness of breath and other symptoms. Physical examination: superficial lymph nodes without palpable enlargement, the right clavicle sternal end uplift, palpable and size of about 8.0cm × 6.5cm tumor, the boundary is unclear, hard and fixed, tenderness is not obvious. Laboratory tests: routine biochemical, immunoglobulin five are normal, urine - Zhou protein negative, serum egg