CT扫描在甲状腺肿瘤诊断中的意义

Significance of CT scanning in the diagnosis of thyroid tumors

目的分析甲状腺肿瘤的CT表现,对照病理结果,评价CT扫描对甲状腺良、恶性肿瘤鉴别诊断的价值。方法对56例甲状腺肿瘤患者增强前后CT图像进行综合分析,所有病例均经活检或手术病理证实。其中,良性病变25例,包括腺瘤14例及结节性甲状腺肿11例;恶性病变31例,包括乳头状癌19例,滤泡癌12例。结果良性病变边界比较清晰,形态较规整;恶性者边缘不清,密度不均匀,与周围结构分界不清,可见颈部淋巴结增大;良、恶性病变内均可见钙化、囊变、出血性改变。结论CT扫描是检查甲状腺病变的有效方法,对甲状腺病变的良、恶性鉴别诊断具有一定的价值。

Objective To analyze the CT findings of thyroid tumors and assess their significance for differentiating thyroid malignant from benign tumors. Methods Fifty - six patients with clinically biopsy or surgically and pathologically proved thyroid tumors which comprised 25 benign （14 adenoma, 11 nodular goiter）and 31 malignant （19 papillary carcinomas, 12 follicular carcinomas）underwent CT scans of the neck without and with contrast enhancement. Simultaneously, all patients whose CT findings were analyzed retrospectively. Results On CT images, benign tumors appeared well - defined margin and more regular outline or shape, whereas malignant tumors appeared ill - defined margin, heterogeneous density, unclear border betweent the tumaral lesions and their peripheral structures, or associated with lymphonodi enlargement. However, the calcification, cystic transformation and hemorrhagic change were could found either in malignant tumors or in benign tumors. Conclusion CT scanning is an effective means for diagnosing the thyroid tumors, it can not only find out thyroid tumors also differentiate malignant from benign tumors.