Solitary thyroid gland metastasis from rectal cancer: A case report and review of the literature

Figure 5 Imaging characteristics of the recurrent left neck mass. A: Ultrasonography of the neck showing a 2.50 cm × 1.64 cm × 1.17 cm mass within left strap muscles and sternocleidomastoid muscle (white arrows; sagittal view); B: Color Doppler view showing the mass has rich blood supply; C: Computed tomography of the neck showing a 2.5 cm × 1.6 cm × 1.1 cm mass within left strap muscles and sternocleidomastoid muscle (white arrow; sagittal view); D: Contrast-enhanced scan showing that the mass was above the internal jugular vein (IJV), with the IJV depressed. IJV: Internal jugular vein; CCA: Common carotid artery.