甲状腺原发恶性淋巴瘤很少见,其伴发于甲状腺癌更罕见。现报告1例如下。患者,男,64岁,农民。30年前偶然发现颈前红枣大肿物,经当地医院诊断为甲状腺瘤,半年长至鸭卵大,以后生长变缓慢,近年来无变化。入院前2个月来,该肿物突然向左侧增长迅速,质地变硬,有压迫感伴疼痛,向左肩放散。检查,肿物活动性好,无压痛。全身浅表淋巴结无肿大。各器官无异常发现。T_31.05,T_4103。术中见肿物16×6×6cm,占据整个甲状腺左叶,包膜完整,一端实性,一端囊性感,周围粘连较轻。肿物完整切除。临床诊断:1.甲状腺瘤囊性变?2.甲状腺癌?病理所见:1.25×10×7.5cm葫芦状肿物,包膜完整。切面一端为8×7cm的囊,经固定后内容为 Primary malignant lymphoma of the thyroid gland is rare, and it is more rarely associated with thyroid cancer. The report 1 is for example below. Patient, male, 64 years old, farmer. 30 years ago, a juvenile jujube with a large jujube was accidentally found in the neck. It was diagnosed as a thyroid tumor by a local hospital. It lasted half a year until the duck’s egg was large, and the growth gradually became slow. There was no change in recent years. In the 2 months before admission, the mass suddenly rose to the left, the texture became hard, there was pressure with pain, and she spread to the left shoulder. Check, tumor activity is good, no tenderness. Superficial lymph nodes are not swollen. No abnormalities were found in all organs. T_31.05, T_4103. Intraoperative findings of mass 16 × 6 × 6cm, occupying the entire thyroid left lobe, capsule intact, one end solid, one end of the capsule sexy, lighter around the adhesion. Complete removal of the mass. Clinical diagnosis: 1. Thyroid tumor cystic? 2. Thyroid cancer? Pathological findings: 1.25 × 10 × 7.5cm gourd-shaped tumor, complete envelope. One side of the cut surface is a 8×7cm capsule. After fixing, the content is