Figure 1.

Axial CT image with contrast demonstrating a moderately avid heterogeneously enhancing exophytic mass at the posterior aspect of the left thyroid lobe, which measures 5.2 cm in the craniocaudal dimension, 2.3 cm in the mediolateral dimension, and 2.6 cm in the anteroposterior dimension. The mass extends to the left posterior paraesophageal location with mild deviation of the trachea and the esophagus to the right. There is no invasion of the surrounding structures. The remainder of the thyroid gland is normal.