Middle thyroid vein tumor thrombus in metastatic papillary thyroid microcarcinoma: A case report and review of literature

Figure 1 A solid nodule in the left lobe of the thyroid by ultrasound examination.

Figure 2 Ultrasound examination revealed a medially echoic mass in the middle thyroid vein.

Figure 3 Hematoxylin and eosin staining of left lobe thyroid mass, it shows papillary thyroid microcarcinoma. A: 4×; B: 10×; C: 20×; D: 40×.

Figure 4 Hematoxylin and eosin staining of the thrombus, it shows carcinoma tissues. A: 4×; B: 10×; C: 20×; D: 40×.

Figure 5 Systemic positron emission tomography metabolism imaging showed no obvious signs of malignancy.