患者,女,20岁。因右颈部包块1年,肿胀伴疼痛15d入院。患者无明显畏寒发热、潮热及盗汗症状,否认既往有结核、肝炎病史。体检:心肺肝脾及耳鼻咽喉无异常,右侧下颌角下及胸锁乳突肌前缘可扪及一包块,约4.0cm×5.0cm×3.0cm大小,表面皮温略高,有轻微触痛,质软,边界欠清,活动差。抗 Patient, female, 20 years old. Due to the right neck mass 1 year, swelling and pain 15d admission. Patients with no chills and fever, hot flashes and night sweats symptoms, denied the past history of tuberculosis, hepatitis. Physical examination: Heart, lung and spleen and Otolaryngology no abnormalities, right mandibular angle and sternocleidomastoid muscle palpable front and a mass of about 4.0cm × 5.0cm × 3.0cm size, slightly higher surface temperature, a slight Tenderness, soft, poor border, poor activity. anti-