甲状腺肿瘤CD15抗原表达及临床意义

Expression of CD15 antigen in thyroid neoplasma and its Clinical significance

目的 研究甲状腺癌组织中CD15抗原的表达情况及其临床意义。方法 应用微波 LSAB免疫组织化学法 ,检测 5 0例甲状腺癌、45例甲状腺腺瘤、2 0例癌旁甲状腺组织和 10例正常甲状腺组织中CD15抗原的表达。结果 在甲状腺癌中CD15表达阳性率为 6 8.0 % ,显著高于甲状腺腺瘤 (42 .0 % )和癌旁甲状腺组织 (35 .0 % ) (P <0 .0 5 ) ,10例正常甲状腺组织中 2例呈CD15弱阳性反应。CD15表达与甲状腺癌组织类型无关 ,在淋巴结转移病例和病理分期Ⅲ～Ⅳ期病例 ,CD15表达阳性率显著高于相应的无淋巴结转移病例和病理分期Ⅰ～Ⅱ期病例 (P <0 .0 5 )。CD15阳性的甲状腺癌复发及死亡率显著高于CD15阴性者 (P <0 .0 5 )。结论 CD15表达对甲状腺癌及恶性程度的判断、生物学行为预测和预后评估是一种很有意义的指标。

Objective To study the expression of CD15 antigen in thyroid neoplasms and its clinical significance. Methods The expression of CD15 antigen in 50 thyroid cancers, 45 adenomas, 20 adjacent noncancerous portions and 10 normal thyroid tissues were investigated by microwave LSAB immunohistochemical technique. Results The expression rate of CD15 in thyroid cancer was 68.0%, which was significantly higher than 35.0% in adjacent noncancerous portions and 42.0% in adenomas (P<0.05). CD15 immunoreactivity was weakly positive in 2 of 10 normal tissues. No correlation was observed between expressions of CD15 and histological grading of thyroid cancer. The expressions of CD15 in cases with lymph node metastasis and of grade Ⅲ～Ⅳ were higher than that in cases without metastasis and of grade Ⅰ～Ⅱ (P<0.05). The percentage of recurrence and death in CD15 positive cases with thyroid cancer was notably higher than that in negative cases with thyroid cancer (P<0.05). Conclusion The expression of CD15 can be regarded as a parameter for evaluating the degree of malignancy, biological behavior and prognosis of thyroid cancer.