CT图像中病灶钙化特征对鉴别甲状腺良、恶性结节的诊断价值

Role of calcification characteristics on CT in differentiating malignant from benign thyroid nodules

目的探讨CT图像中病灶钙化特征对甲状腺良、恶性结节的鉴别诊断价值。方法回顾性分析甲状腺结节患者58例(90个结节)的病例资料。58例术前均行甲状腺CT平扫和平扫+增强扫描,诊断经术后病理证实,并依此分为恶性结节(A组,21个结节)和良性结节(B组,69个结节)两组,比较两组病灶钙化的形态、数目及位置。结果恶性甲状腺结节钙化率为61.9%(13/21),明显高于良性结节的21.7%(15/69)(P<0.05)。良、恶性甲状腺结节的钙化灶形态相仿。恶性甲状腺结节钙化发生在结节内部的占52.4%,明显高于良性结节的8.7%(P<0.05)。结论与良性结节比较,甲状腺恶性结节钙化率高,且钙化多出现在结节的内部。

Objective To evaluate the value of calcification characteristics on CT in differentiating diagnosis of malignant and benign thyroid nodules.Methods Data of 58 patients with thyroid nodules were retrospectively analyzed,who underwent plane or enhanced CT scaning.The diagnosis was confirmed by pathology after surgery,based on which the thyroid nodules were divided into two groups of A（malignant,21 nodules） and B（benign,69 nodules）.The form,size,number and location of calcification were compared between two groups.Results The incidence rate of calcification was higher in group A than that in group B[61.9%（13/21） vs.21.7%（15/69）]（P0.05）.The form of calcification of group A was similar to that of group B.The incidence rate of calcification located in the inner side of the nodules was higher in group A than that in group B（52.4% vs.8.7%）（P0.05）.Conclusion Compared to benign thyroid nodules,the incidence rate of calcification of malignant thyroid nodules is higher and the calcification lesions locates mainly in the inner nodules.