病例摘要患者男性,61岁,住院号864411,因左侧颈部出现肿块半个月于1986年6月25日入院。2个月前患者因发热、咽喉疼痛去医院就诊,检查时发现左颌下有一2×2cm大小之肿块,压痛明显,经抗炎治疗后,肿块逐渐消失。半月前无意中发现左颈部有核桃大小(3×2cm)之肿块,触摸时无任何不适。自发现颈 Case summary The patient was a 61-year-old man with a hospital number of 864411. He was admitted to the hospital on June 25, 1986 because he developed a mass on his left neck. Two months ago, the patient went to the hospital for fever and throat pain. During the examination, a mass of 2×2 cm in size was found under the left mandible. The tenderness was obvious. After the anti-inflammatory treatment, the mass gradually disappeared. Half a month ago, he found a lump in the size of the walnut (3 x 2 cm) in the left neck, and he did not feel any discomfort when he touched it. Since found neck