Abstract
Thyroid follicular tumors are divided into follicular adenoma and follicular carcinoma. Cell heterogeneity does not contribute to discrimination between benign and malignant. For the pathological diagnosis of follicular carcinoma, it is necessary to confirm at least one of capsular invasion/vascular invasion of tumor cells or metastasis to the outside of the thyroid gland. Many researchers have examined this aspect of follicular tumors, and as a result, it is considered that there is a significant difference between follicular cancer and benign nodal lesion, but that this difference alone is insufficient for discriminating between benign and malignant.
Since examined improve the diagnostic accuracy of preoperative examination of follicular carcinoma by evaluation of a combination of these test results. Based on the possibility of application to multi-modality imaging, we report the results of our study.
Patients with thyroid follicular lesions and benign nodular lesions who underwent surgery in our department between March 2015 and July 2018 were targeted. The breakdown was 10 cases of follicular cancer （minimally invasive 6, oxyphilic cell carcinoma 3, widely invasive 1）, and 25 cases of benign follicular tumor （adenomatous nodules 9, adenomatous goiter 8, follicular adenoma 6, oxyphilic cell adenoma 2）. We conducted blood flow imaging analysis by ultrasonic examination, 201Tl late image accumulated findings by RI examination, and diffusion weighted image （DWI） and ADC value by MRI examination. In this study, results were obtained by combining the three methods to improve the accuracy of diagnosing follicular cancer. The multi-modality assessment was considered to contribute to treatment strategies for follicular lesions.
