Distribution Characteristics of Benign and Malignant Thyroid Nodules
OC16-OC18
Correspondence
Dr. Shao-Gang Ma,
No. 120 Suzhi Road, Suqian City 223800, Jiangsu Province, China.
E-mail: mashaogang@163.com
Introduction: The right thyroid lobe has a little bigger size and a few more number of cells than the left lobe. It is uncertain whether this anatomical variation may reflect the distribution differences of the malignant thyroid nodules.
Aim: To investigate the location differences and clinical characteristics of the benign and malignant thyroid nodules.
Materials and Methods: A total of 2194 participants with thyroid nodules were enrolled in this study. Colour Doppler was used to observe the parameters, including the number of nodules, nodule size, nodule shape, nodule capsule, internal echo and haemodynamics . The malignant thyroid nodules were diagnosed by thyroid ultrasonography and pathology. Statistical analysis was conducted with SPSS 16.0 software.
Results: The right lobes (46.5%) were more frequently encroached by Papillary Thyroid Carcinoma (PTC) than the left lobes and isthmus. The ratio of envelopes invaded by tumours was 45.6% for the right lobe, 40.4% for the left lobe, and 14% for the bilateral lobes. The ratio of lymph node metastases, which were encroached by PTC was approximately 24.2%. Adenoma, cyst and calcification were observed more frequently in the right lobes than in the left lobes.
Conclusion: The right lobe suffered from benign and malignant thyroid diseases more frequently than the left lobe. The right envelopes and lymph glands were more frequently encroached by PTC. More attention should be paid to the nodules on the right lobes.