患者男，４０岁。发现右颈部肿块３个月，于１９９６年１月２３日入院。患者于３个月前偶然发现右颈后三角无痛性肿块，伴乏力及夜间盗汗，从无发热及出血倾向。体检：皮肤、粘膜无黄染及出血点，胸骨无压痛。右颈后三角区触及一枚１．５ｃｍ×１．０ｃｍ大小的淋巴结，左... Male patient, 40 years old. The right neck mass was found for 3 months and was admitted to hospital on January 23, 1996. The patient accidentally discovered a painless mass in the posterior triangle of the right neck 3 months earlier, with fatigue and night sweats, and no tendency to fever or bleeding. Physical examination: The skin and mucous membranes were free from yellowing and bleeding, and there was no tenderness in the sternum. The posterior triangle of the right neck touches a lymph node with a size of 1.5cm x 1.0cm, left ...