原发性甲状腺恶性淋巴瘤2例

Two cases of primary malignant lmphoma of thyroid

原发性甲状腺恶性淋巴瘤（primary malignant lymphoma of thyroid，PMLT）是起源于甲状腺内淋巴细胞的恶性肿瘤，不包括转移至甲状腺的淋巴瘤及颈部淋巴结病变的直接侵犯。PMLT罕见，占所有甲状腺恶性肿瘤的1％～5%，占所有结外恶性淋巴瘤的比例低于2％，缺乏特异性临床表现，诊断困难，容易误诊。我科诊治2例PMLT患者，报告如下。

Summary Two 78-years old-old man and woman presented with thyroid tumor without a past history of chronic thyroiditis. Physical examinations showed touchable lumps in thyroid without other lymph nodes swelling or extra nodal lesions. Two cases both had thyroid function test, color Doppler ultrasound examination, computed tomography（CT） scan and fine needle aspiration（FNA） before surgery. The patients underwent partial thyroidec- tomy or subtotal thyroidectomy. Postoperative pathologic findings were consistent with malignant lymphoma. The diagnosis mainly relied on the postoperative pathologic findings.