1临床资料患者,男,31岁,因双侧肘部肿块呈进行性增大2年余,于2007年4月10日入院。两年前患者发现双侧肘部对称性肿块约黄豆大小,无疼痛,无发热、畏寒,无头痛、头晕,未引起重视。半年后发现肿块较前增大约2倍,在当地医院就诊,具体诊疗过程不详。患者时有双下肢皮肤瘙痒,手抓处会 1 Clinical data Patients, male, 31 years old, due to bilateral elbow mass progressive increase of more than 2 years, on April 10, 2007 admission. Two years ago, the patient found that bilateral elbows had a symmetrical mass of about soy size, no pain, no fever, no chills, no headache and dizziness. Half a year later found that the mass increased about 2 times compared with the previous, at a local hospital for treatment, the specific diagnosis and treatment process is unknown. Patients with both lower extremity itchy skin, hand grasp will be