患者 ,男 ,9岁。 3d前无明显原因突感右颈部胀 ,始发现右颈部有一肿块 ,不痛不痒 ,未引起重视 ;第 3天突然增大 ,右颈部胀感明显 ,进食时无咽痛及颈部痛 ,于 2 0 0 3年 9月 1日入院。既往身体健康。体检 :体温、脉搏、呼吸及血压正常 ,颈右侧胸锁乳突肌中段前缘处 ,有一约 6cm Patient, male, 9 years old. There was no obvious reason before 3 days of sudden sensation right neck swelling, initially found a right neck has a mass, itching, did not pay attention to; suddenly increased on the 3rd day, right neck swelling, no sore throat and neck Department of pain, on September 1, 2003 admission. In the past, good health. Physical examination: body temperature, pulse, respiration and normal blood pressure, the right cervical sternocleidomastoid at the middle of the front, there is a about 6cm